/*!
 * Vue.js v2.5.17
 * (c) 2014-2018 Evan You
 * Released under the MIT License.
 */
(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
	typeof define === 'function' && define.amd ? define(factory) :
	(global.Vue = factory());
}(this, (function () { 'use strict';

/*  */

var emptyObject = Object.freeze({});

// these helpers produces better vm code in JS engines due to their
// explicitness and function inlining
function isUndef (v) {
	return v === undefined || v === null
}

function isDef (v) {
	return v !== undefined && v !== null
}

function isTrue (v) {
	return v === true
}

function isFalse (v) {
	return v === false
}

/**
 * Check if value is primitive
 */
function isPrimitive (value) {
	return (
		typeof value === 'string' ||
		typeof value === 'number' ||
		// $flow-disable-line
		typeof value === 'symbol' ||
		typeof value === 'boolean'
	)
}

/**
 * Quick object check - this is primarily used to tell
 * Objects from primitive values when we know the value
 * is a JSON-compliant type.
 */
function isObject (obj) {
	return obj !== null && typeof obj === 'object'
}

/**
 * Get the raw type string of a value e.g. [object Object]
 */
var _toString = Object.prototype.toString;

function toRawType (value) {
	return _toString.call(value).slice(8, -1)
}

/**
 * Strict object type check. Only returns true
 * for plain JavaScript objects.
 */
function isPlainObject (obj) {
	return _toString.call(obj) === '[object Object]'
}

function isRegExp (v) {
	return _toString.call(v) === '[object RegExp]'
}

/**
 * Check if val is a valid array index.
 */
function isValidArrayIndex (val) {
	var n = parseFloat(String(val));
	return n >= 0 && Math.floor(n) === n && isFinite(val)
}

/**
 * Convert a value to a string that is actually rendered.
 */
function toString (val) {
	return val == null
		? ''
		: typeof val === 'object'
			? JSON.stringify(val, null, 2)
			: String(val)
}

/**
 * Convert a input value to a number for persistence.
 * If the conversion fails, return original string.
 */
function toNumber (val) {
	var n = parseFloat(val);
	return isNaN(n) ? val : n
}

/**
 * Make a map and return a function for checking if a key
 * is in that map.
 */
function makeMap (
	str,
	expectsLowerCase
) {
	var map = Object.create(null);
	var list = str.split(',');
	for (var i = 0; i < list.length; i++) {
		map[list[i]] = true;
	}
	return expectsLowerCase
		? function (val) { return map[val.toLowerCase()]; }
		: function (val) { return map[val]; }
}

/**
 * Check if a tag is a built-in tag.
 */
var isBuiltInTag = makeMap('slot,component', true);

/**
 * Check if a attribute is a reserved attribute.
 */
var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');

/**
 * Remove an item from an array
 */
function remove (arr, item) {
	if (arr.length) {
		var index = arr.indexOf(item);
		if (index > -1) {
			return arr.splice(index, 1)
		}
	}
}

/**
 * Check whether the object has the property.
 */
var hasOwnProperty = Object.prototype.hasOwnProperty;
function hasOwn (obj, key) {
	return hasOwnProperty.call(obj, key)
}

/**
 * Create a cached version of a pure function.
 */
function cached (fn) {
	var cache = Object.create(null);
	return (function cachedFn (str) {
		var hit = cache[str];
		return hit || (cache[str] = fn(str))
	})
}

/**
 * Camelize a hyphen-delimited string.
 */
var camelizeRE = /-(\w)/g;
var camelize = cached(function (str) {
	return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
});

/**
 * Capitalize a string.
 */
var capitalize = cached(function (str) {
	return str.charAt(0).toUpperCase() + str.slice(1)
});

/**
 * Hyphenate a camelCase string.
 */
var hyphenateRE = /\B([A-Z])/g;
var hyphenate = cached(function (str) {
	return str.replace(hyphenateRE, '-$1').toLowerCase()
});

/**
 * Simple bind polyfill for environments that do not support it... e.g.
 * PhantomJS 1.x. Technically we don't need this anymore since native bind is
 * now more performant in most browsers, but removing it would be breaking for
 * code that was able to run in PhantomJS 1.x, so this must be kept for
 * backwards compatibility.
 */

/* istanbul ignore next */
function polyfillBind (fn, ctx) {
	function boundFn (a) {
		var l = arguments.length;
		return l
			? l > 1
				? fn.apply(ctx, arguments)
				: fn.call(ctx, a)
			: fn.call(ctx)
	}

	boundFn._length = fn.length;
	return boundFn
}

function nativeBind (fn, ctx) {
	return fn.bind(ctx)
}

var bind = Function.prototype.bind
	? nativeBind
	: polyfillBind;

/**
 * Convert an Array-like object to a real Array.
 */
function toArray (list, start) {
	start = start || 0;
	var i = list.length - start;
	var ret = new Array(i);
	while (i--) {
		ret[i] = list[i + start];
	}
	return ret
}

/**
 * Mix properties into target object.
 */
function extend (to, _from) {
	for (var key in _from) {
		to[key] = _from[key];
	}
	return to
}

/**
 * Merge an Array of Objects into a single Object.
 */
function toObject (arr) {
	var res = {};
	for (var i = 0; i < arr.length; i++) {
		if (arr[i]) {
			extend(res, arr[i]);
		}
	}
	return res
}

/**
 * Perform no operation.
 * Stubbing args to make Flow happy without leaving useless transpiled code
 * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/)
 */
function noop (a, b, c) {}

/**
 * Always return false.
 */
var no = function (a, b, c) { return false; };

/**
 * Return same value
 */
var identity = function (_) { return _; };

/**
 * Generate a static keys string from compiler modules.
 */
function genStaticKeys (modules) {
	return modules.reduce(function (keys, m) {
		return keys.concat(m.staticKeys || [])
	}, []).join(',')
}

/**
 * Check if two values are loosely equal - that is,
 * if they are plain objects, do they have the same shape?
 */
function looseEqual (a, b) {
	if (a === b) { return true }
	var isObjectA = isObject(a);
	var isObjectB = isObject(b);
	if (isObjectA && isObjectB) {
		try {
			var isArrayA = Array.isArray(a);
			var isArrayB = Array.isArray(b);
			if (isArrayA && isArrayB) {
				return a.length === b.length && a.every(function (e, i) {
					return looseEqual(e, b[i])
				})
			} else if (!isArrayA && !isArrayB) {
				var keysA = Object.keys(a);
				var keysB = Object.keys(b);
				return keysA.length === keysB.length && keysA.every(function (key) {
					return looseEqual(a[key], b[key])
				})
			} else {
				/* istanbul ignore next */
				return false
			}
		} catch (e) {
			/* istanbul ignore next */
			return false
		}
	} else if (!isObjectA && !isObjectB) {
		return String(a) === String(b)
	} else {
		return false
	}
}

function looseIndexOf (arr, val) {
	for (var i = 0; i < arr.length; i++) {
		if (looseEqual(arr[i], val)) { return i }
	}
	return -1
}

/**
 * Ensure a function is called only once.
 */
function once (fn) {
	var called = false;
	return function () {
		if (!called) {
			called = true;
			fn.apply(this, arguments);
		}
	}
}

var SSR_ATTR = 'data-server-rendered';

var ASSET_TYPES = [
	'component',
	'directive',
	'filter'
];

var LIFECYCLE_HOOKS = [
	'beforeCreate',
	'created',
	'beforeMount',
	'mounted',
	'beforeUpdate',
	'updated',
	'beforeDestroy',
	'destroyed',
	'activated',
	'deactivated',
	'errorCaptured'
];

/*  */

var config = ({
	/**
	 * Option merge strategies (used in core/util/options)
	 */
	// $flow-disable-line
	optionMergeStrategies: Object.create(null),

	/**
	 * Whether to suppress warnings.
	 */
	silent: false,

	/**
	 * Show production mode tip message on boot?
	 */
	productionTip: "development" !== 'production',

	/**
	 * Whether to enable devtools
	 */
	devtools: "development" !== 'production',

	/**
	 * Whether to record perf
	 */
	performance: false,

	/**
	 * Error handler for watcher errors
	 */
	errorHandler: null,

	/**
	 * Warn handler for watcher warns
	 */
	warnHandler: null,

	/**
	 * Ignore certain custom elements
	 */
	ignoredElements: [],

	/**
	 * Custom user key aliases for v-on
	 */
	// $flow-disable-line
	keyCodes: Object.create(null),

	/**
	 * Check if a tag is reserved so that it cannot be registered as a
	 * component. This is platform-dependent and may be overwritten.
	 */
	isReservedTag: no,

	/**
	 * Check if an attribute is reserved so that it cannot be used as a component
	 * prop. This is platform-dependent and may be overwritten.
	 */
	isReservedAttr: no,

	/**
	 * Check if a tag is an unknown element.
	 * Platform-dependent.
	 */
	isUnknownElement: no,

	/**
	 * Get the namespace of an element
	 */
	getTagNamespace: noop,

	/**
	 * Parse the real tag name for the specific platform.
	 */
	parsePlatformTagName: identity,

	/**
	 * Check if an attribute must be bound using property, e.g. value
	 * Platform-dependent.
	 */
	mustUseProp: no,

	/**
	 * Exposed for legacy reasons
	 */
	_lifecycleHooks: LIFECYCLE_HOOKS
})

/*  */

/**
 * Check if a string starts with $ or _
 */
function isReserved (str) {
	var c = (str + '').charCodeAt(0);
	return c === 0x24 || c === 0x5F
}

/**
 * Define a property.
 */
function def (obj, key, val, enumerable) {
	Object.defineProperty(obj, key, {
		value: val,
		enumerable: !!enumerable,
		writable: true,
		configurable: true
	});
}

/**
 * Parse simple path.
 */
var bailRE = /[^\w.$]/;
function parsePath (path) {
	if (bailRE.test(path)) {
		return
	}
	var segments = path.split('.');
	return function (obj) {
		for (var i = 0; i < segments.length; i++) {
			if (!obj) { return }
			obj = obj[segments[i]];
		}
		return obj
	}
}

/*  */

// can we use __proto__?
var hasProto = '__proto__' in {};

// Browser environment sniffing
var inBrowser = typeof window !== 'undefined';
var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
var UA = inBrowser && window.navigator.userAgent.toLowerCase();
var isIE = UA && /msie|trident/.test(UA);
var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
var isEdge = UA && UA.indexOf('edge/') > 0;
var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;

// Firefox has a "watch" function on Object.prototype...
var nativeWatch = ({}).watch;

var supportsPassive = false;
if (inBrowser) {
	try {
		var opts = {};
		Object.defineProperty(opts, 'passive', ({
			get: function get () {
				/* istanbul ignore next */
				supportsPassive = true;
			}
		})); // https://github.com/facebook/flow/issues/285
		window.addEventListener('test-passive', null, opts);
	} catch (e) {}
}

// this needs to be lazy-evaled because vue may be required before
// vue-server-renderer can set VUE_ENV
var _isServer;
var isServerRendering = function () {
	if (_isServer === undefined) {
		/* istanbul ignore if */
		if (!inBrowser && !inWeex && typeof global !== 'undefined') {
			// detect presence of vue-server-renderer and avoid
			// Webpack shimming the process
			_isServer = global['process'].env.VUE_ENV === 'server';
		} else {
			_isServer = false;
		}
	}
	return _isServer
};

// detect devtools
var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;

/* istanbul ignore next */
function isNative (Ctor) {
	return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
}

var hasSymbol =
	typeof Symbol !== 'undefined' && isNative(Symbol) &&
	typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);

var _Set;
/* istanbul ignore if */ // $flow-disable-line
if (typeof Set !== 'undefined' && isNative(Set)) {
	// use native Set when available.
	_Set = Set;
} else {
	// a non-standard Set polyfill that only works with primitive keys.
	_Set = (function () {
		function Set () {
			this.set = Object.create(null);
		}
		Set.prototype.has = function has (key) {
			return this.set[key] === true
		};
		Set.prototype.add = function add (key) {
			this.set[key] = true;
		};
		Set.prototype.clear = function clear () {
			this.set = Object.create(null);
		};

		return Set;
	}());
}

/*  */

var warn = noop;
var tip = noop;
var generateComponentTrace = (noop); // work around flow check
var formatComponentName = (noop);

{
	var hasConsole = typeof console !== 'undefined';
	var classifyRE = /(?:^|[-_])(\w)/g;
	var classify = function (str) { return str
		.replace(classifyRE, function (c) { return c.toUpperCase(); })
		.replace(/[-_]/g, ''); };

	warn = function (msg, vm) {
		var trace = vm ? generateComponentTrace(vm) : '';

		if (config.warnHandler) {
			config.warnHandler.call(null, msg, vm, trace);
		} else if (hasConsole && (!config.silent)) {
			console.error(("[Vue warn]: " + msg + trace));
		}
	};

	tip = function (msg, vm) {
		if (hasConsole && (!config.silent)) {
			console.warn("[Vue tip]: " + msg + (
				vm ? generateComponentTrace(vm) : ''
			));
		}
	};

	formatComponentName = function (vm, includeFile) {
		if (vm.$root === vm) {
			return '<Root>'
		}
		var options = typeof vm === 'function' && vm.cid != null
			? vm.options
			: vm._isVue
				? vm.$options || vm.constructor.options
				: vm || {};
		var name = options.name || options._componentTag;
		var file = options.__file;
		if (!name && file) {
			var match = file.match(/([^/\\]+)\.vue$/);
			name = match && match[1];
		}

		return (
			(name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
			(file && includeFile !== false ? (" at " + file) : '')
		)
	};

	var repeat = function (str, n) {
		var res = '';
		while (n) {
			if (n % 2 === 1) { res += str; }
			if (n > 1) { str += str; }
			n >>= 1;
		}
		return res
	};

	generateComponentTrace = function (vm) {
		if (vm._isVue && vm.$parent) {
			var tree = [];
			var currentRecursiveSequence = 0;
			while (vm) {
				if (tree.length > 0) {
					var last = tree[tree.length - 1];
					if (last.constructor === vm.constructor) {
						currentRecursiveSequence++;
						vm = vm.$parent;
						continue
					} else if (currentRecursiveSequence > 0) {
						tree[tree.length - 1] = [last, currentRecursiveSequence];
						currentRecursiveSequence = 0;
					}
				}
				tree.push(vm);
				vm = vm.$parent;
			}
			return '\n\nfound in\n\n' + tree
				.map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)
						? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)")
						: formatComponentName(vm))); })
				.join('\n')
		} else {
			return ("\n\n(found in " + (formatComponentName(vm)) + ")")
		}
	};
}

/*  */


var uid = 0;


// 这里原先是Dep

var targetStack = [];

function pushTarget (_target) {
	if (Dep.target) { targetStack.push(Dep.target); }
	Dep.target = _target;
}

function popTarget () {
	Dep.target = targetStack.pop();
}

/*  */


// 这里原先是  VNode

var prototypeAccessors = { child: { configurable: true } };

// DEPRECATED: alias for componentInstance for backwards compat.
/* istanbul ignore next */
prototypeAccessors.child.get = function () {
	return this.componentInstance
};

Object.defineProperties( VNode.prototype, prototypeAccessors );

var createEmptyVNode = function (text) {
	if ( text === void 0 ) text = '';

	var node = new VNode();
	node.text = text;
	node.isComment = true;
	return node
};

function createTextVNode (val) {
	return new VNode(undefined, undefined, undefined, String(val))
}

// optimized shallow clone
// used for static nodes and slot nodes because they may be reused across
// multiple renders, cloning them avoids errors when DOM manipulations rely
// on their elm reference.
function cloneVNode (vnode) {
	var cloned = new VNode(
		vnode.tag,
		vnode.data,
		vnode.children,
		vnode.text,
		vnode.elm,
		vnode.context,
		vnode.componentOptions,
		vnode.asyncFactory
	);
	cloned.ns = vnode.ns;
	cloned.isStatic = vnode.isStatic;
	cloned.key = vnode.key;
	cloned.isComment = vnode.isComment;
	cloned.fnContext = vnode.fnContext;
	cloned.fnOptions = vnode.fnOptions;
	cloned.fnScopeId = vnode.fnScopeId;
	cloned.isCloned = true;
	return cloned
}

/*
 * not type checking this file because flow doesn't play well with
 * dynamically accessing methods on Array prototype
 */

var arrayProto = Array.prototype;
var arrayMethods = Object.create(arrayProto);

var methodsToPatch = [
	'push',
	'pop',
	'shift',
	'unshift',
	'splice',
	'sort',
	'reverse'
];

/**
 * Intercept mutating methods and emit events
 */
methodsToPatch.forEach(function (method) {
	// cache original method
	var original = arrayProto[method];
	def(arrayMethods, method, function mutator () {
		var args = [], len = arguments.length;
		while ( len-- ) args[ len ] = arguments[ len ];

		var result = original.apply(this, args);
		var ob = this.__ob__;
		var inserted;
		switch (method) {
			case 'push':
			case 'unshift':
				inserted = args;
				break
			case 'splice':
				inserted = args.slice(2);
				break
		}
		if (inserted) { ob.observeArray(inserted); }
		// notify change
		ob.dep.notify();
		return result
	});
});

/*  */

var arrayKeys = Object.getOwnPropertyNames(arrayMethods);

/**
 * In some cases we may want to disable observation inside a component's
 * update computation.
 */
var shouldObserve = true;

function toggleObserving (value) {
	shouldObserve = value;
}


// 这里原来是 Observer

// helpers

/**
 * Augment an target Object or Array by intercepting
 * the prototype chain using __proto__
 */
function protoAugment (target, src, keys) {
	/* eslint-disable no-proto */
	target.__proto__ = src;
	/* eslint-enable no-proto */
}

/**
 * Augment an target Object or Array by defining
 * hidden properties.
 */
/* istanbul ignore next */
function copyAugment (target, src, keys) {
	for (var i = 0, l = keys.length; i < l; i++) {
		var key = keys[i];
		def(target, key, src[key]);
	}
}


// 这里原先是 observe

// 这里原先是  defineReactive

/**
 * Set a property on an object. Adds the new property and
 * triggers change notification if the property doesn't
 * already exist.
 */
function set (target, key, val) {
	if ("development" !== 'production' &&
		(isUndef(target) || isPrimitive(target))
	) {
		warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target))));
	}
	if (Array.isArray(target) && isValidArrayIndex(key)) {
		target.length = Math.max(target.length, key);
		target.splice(key, 1, val);
		return val
	}
	if (key in target && !(key in Object.prototype)) {
		target[key] = val;
		return val
	}
	var ob = (target).__ob__;
	if (target._isVue || (ob && ob.vmCount)) {
		"development" !== 'production' && warn(
			'Avoid adding reactive properties to a Vue instance or its root $data ' +
			'at runtime - declare it upfront in the data option.'
		);
		return val
	}
	if (!ob) {
		target[key] = val;
		return val
	}
	defineReactive(ob.value, key, val);
	ob.dep.notify();
	return val
}

/**
 * Delete a property and trigger change if necessary.
 */
function del (target, key) {
	if ("development" !== 'production' &&
		(isUndef(target) || isPrimitive(target))
	) {
		warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target))));
	}
	if (Array.isArray(target) && isValidArrayIndex(key)) {
		target.splice(key, 1);
		return
	}
	var ob = (target).__ob__;
	if (target._isVue || (ob && ob.vmCount)) {
		"development" !== 'production' && warn(
			'Avoid deleting properties on a Vue instance or its root $data ' +
			'- just set it to null.'
		);
		return
	}
	if (!hasOwn(target, key)) {
		return
	}
	delete target[key];
	if (!ob) {
		return
	}
	ob.dep.notify();
}

/**
 * Collect dependencies on array elements when the array is touched, since
 * we cannot intercept array element access like property getters.
 */
function dependArray (value) {
	for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
		e = value[i];
		e && e.__ob__ && e.__ob__.dep.depend();
		if (Array.isArray(e)) {
			dependArray(e);
		}
	}
}

/*  */

/**
 * Option overwriting strategies are functions that handle
 * how to merge a parent option value and a child option
 * value into the final value.
 */
var strats = config.optionMergeStrategies;

/**
 * Options with restrictions
 */
{
	strats.el = strats.propsData = function (parent, child, vm, key) {
		if (!vm) {
			warn(
				"option \"" + key + "\" can only be used during instance " +
				'creation with the `new` keyword.'
			);
		}
		return defaultStrat(parent, child)
	};
}

/**
 * Helper that recursively merges two data objects together.
 */
function mergeData (to, from) {
	if (!from) { return to }
	var key, toVal, fromVal;
	var keys = Object.keys(from);
	for (var i = 0; i < keys.length; i++) {
		key = keys[i];
		toVal = to[key];
		fromVal = from[key];
		if (!hasOwn(to, key)) {
			set(to, key, fromVal);
		} else if (isPlainObject(toVal) && isPlainObject(fromVal)) {
			mergeData(toVal, fromVal);
		}
	}
	return to
}

/**
 * Data
 */
function mergeDataOrFn (
	parentVal,
	childVal,
	vm
) {
	if (!vm) {
		// in a Vue.extend merge, both should be functions
		if (!childVal) {
			return parentVal
		}
		if (!parentVal) {
			return childVal
		}
		// when parentVal & childVal are both present,
		// we need to return a function that returns the
		// merged result of both functions... no need to
		// check if parentVal is a function here because
		// it has to be a function to pass previous merges.
		return function mergedDataFn () {
			return mergeData(
				typeof childVal === 'function' ? childVal.call(this, this) : childVal,
				typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal
			)
		}
	} else {
		return function mergedInstanceDataFn () {
			// instance merge
			var instanceData = typeof childVal === 'function'
				? childVal.call(vm, vm)
				: childVal;
			var defaultData = typeof parentVal === 'function'
				? parentVal.call(vm, vm)
				: parentVal;
			if (instanceData) {
				return mergeData(instanceData, defaultData)
			} else {
				return defaultData
			}
		}
	}
}

strats.data = function (
	parentVal,
	childVal,
	vm
) {
	if (!vm) {
		if (childVal && typeof childVal !== 'function') {
			"development" !== 'production' && warn(
				'The "data" option should be a function ' +
				'that returns a per-instance value in component ' +
				'definitions.',
				vm
			);

			return parentVal
		}
		return mergeDataOrFn(parentVal, childVal)
	}

	return mergeDataOrFn(parentVal, childVal, vm)
};

/**
 * Hooks and props are merged as arrays.
 */
function mergeHook (
	parentVal,
	childVal
) {
	return childVal
		? parentVal
			? parentVal.concat(childVal)
			: Array.isArray(childVal)
				? childVal
				: [childVal]
		: parentVal
}

LIFECYCLE_HOOKS.forEach(function (hook) {
	strats[hook] = mergeHook;
});

/**
 * Assets
 *
 * When a vm is present (instance creation), we need to do
 * a three-way merge between constructor options, instance
 * options and parent options.
 */
function mergeAssets (
	parentVal,
	childVal,
	vm,
	key
) {
	var res = Object.create(parentVal || null);
	if (childVal) {
		"development" !== 'production' && assertObjectType(key, childVal, vm);
		return extend(res, childVal)
	} else {
		return res
	}
}

ASSET_TYPES.forEach(function (type) {
	strats[type + 's'] = mergeAssets;
});

/**
 * Watchers.
 *
 * Watchers hashes should not overwrite one
 * another, so we merge them as arrays.
 */
strats.watch = function (
	parentVal,
	childVal,
	vm,
	key
) {
	// work around Firefox's Object.prototype.watch...
	if (parentVal === nativeWatch) { parentVal = undefined; }
	if (childVal === nativeWatch) { childVal = undefined; }
	/* istanbul ignore if */
	if (!childVal) { return Object.create(parentVal || null) }
	{
		assertObjectType(key, childVal, vm);
	}
	if (!parentVal) { return childVal }
	var ret = {};
	extend(ret, parentVal);
	for (var key$1 in childVal) {
		var parent = ret[key$1];
		var child = childVal[key$1];
		if (parent && !Array.isArray(parent)) {
			parent = [parent];
		}
		ret[key$1] = parent
			? parent.concat(child)
			: Array.isArray(child) ? child : [child];
	}
	return ret
};

/**
 * Other object hashes.
 */
strats.props =
strats.methods =
strats.inject =
strats.computed = function (
	parentVal,
	childVal,
	vm,
	key
) {
	if (childVal && "development" !== 'production') {
		assertObjectType(key, childVal, vm);
	}
	if (!parentVal) { return childVal }
	var ret = Object.create(null);
	extend(ret, parentVal);
	if (childVal) { extend(ret, childVal); }
	return ret
};
strats.provide = mergeDataOrFn;

/**
 * Default strategy.
 */
var defaultStrat = function (parentVal, childVal) {
	return childVal === undefined
		? parentVal
		: childVal
};

/**
 * Validate component names
 */
function checkComponents (options) {
	for (var key in options.components) {
		validateComponentName(key);
	}
}

function validateComponentName (name) {
	if (!/^[a-zA-Z][\w-]*$/.test(name)) {
		warn(
			'Invalid component name: "' + name + '". Component names ' +
			'can only contain alphanumeric characters and the hyphen, ' +
			'and must start with a letter.'
		);
	}
	if (isBuiltInTag(name) || config.isReservedTag(name)) {
		warn(
			'Do not use built-in or reserved HTML elements as component ' +
			'id: ' + name
		);
	}
}

/**
 * Ensure all props option syntax are normalized into the
 * Object-based format.
 */
function normalizeProps (options, vm) {
	var props = options.props;
	if (!props) { return }
	var res = {};
	var i, val, name;
	if (Array.isArray(props)) {
		i = props.length;
		while (i--) {
			val = props[i];
			if (typeof val === 'string') {
				name = camelize(val);
				res[name] = { type: null };
			} else {
				warn('props must be strings when using array syntax.');
			}
		}
	} else if (isPlainObject(props)) {
		for (var key in props) {
			val = props[key];
			name = camelize(key);
			res[name] = isPlainObject(val)
				? val
				: { type: val };
		}
	} else {
		warn(
			"Invalid value for option \"props\": expected an Array or an Object, " +
			"but got " + (toRawType(props)) + ".",
			vm
		);
	}
	options.props = res;
}

/**
 * Normalize all injections into Object-based format
 */
function normalizeInject (options, vm) {
	var inject = options.inject;
	if (!inject) { return }
	var normalized = options.inject = {};
	if (Array.isArray(inject)) {
		for (var i = 0; i < inject.length; i++) {
			normalized[inject[i]] = { from: inject[i] };
		}
	} else if (isPlainObject(inject)) {
		for (var key in inject) {
			var val = inject[key];
			normalized[key] = isPlainObject(val)
				? extend({ from: key }, val)
				: { from: val };
		}
	} else {
		warn(
			"Invalid value for option \"inject\": expected an Array or an Object, " +
			"but got " + (toRawType(inject)) + ".",
			vm
		);
	}
}

/**
 * Normalize raw function directives into object format.
 */
function normalizeDirectives (options) {
	var dirs = options.directives;
	if (dirs) {
		for (var key in dirs) {
			var def = dirs[key];
			if (typeof def === 'function') {
				dirs[key] = { bind: def, update: def };
			}
		}
	}
}

function assertObjectType (name, value, vm) {
	if (!isPlainObject(value)) {
		warn(
			"Invalid value for option \"" + name + "\": expected an Object, " +
			"but got " + (toRawType(value)) + ".",
			vm
		);
	}
}

/**
 * Merge two option objects into a new one.
 * Core utility used in both instantiation and inheritance.
 */
function mergeOptions (
	parent,
	child,
	vm
) {
	{
		checkComponents(child);
	}

	if (typeof child === 'function') {
		child = child.options;
	}

	normalizeProps(child, vm);
	normalizeInject(child, vm);
	normalizeDirectives(child);
	var extendsFrom = child.extends;
	if (extendsFrom) {
		parent = mergeOptions(parent, extendsFrom, vm);
	}
	if (child.mixins) {
		for (var i = 0, l = child.mixins.length; i < l; i++) {
			parent = mergeOptions(parent, child.mixins[i], vm);
		}
	}
	var options = {};
	var key;
	for (key in parent) {
		mergeField(key);
	}
	for (key in child) {
		if (!hasOwn(parent, key)) {
			mergeField(key);
		}
	}
	function mergeField (key) {
		var strat = strats[key] || defaultStrat;
		options[key] = strat(parent[key], child[key], vm, key);
	}
	return options
}

/**
 * Resolve an asset.
 * This function is used because child instances need access
 * to assets defined in its ancestor chain.
 */
function resolveAsset (
	options,
	type,
	id,
	warnMissing
) {
	/* istanbul ignore if */
	if (typeof id !== 'string') {
		return
	}
	var assets = options[type];
	// check local registration variations first
	if (hasOwn(assets, id)) { return assets[id] }
	var camelizedId = camelize(id);
	if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }
	var PascalCaseId = capitalize(camelizedId);
	if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }
	// fallback to prototype chain
	var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
	if ("development" !== 'production' && warnMissing && !res) {
		warn(
			'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
			options
		);
	}
	return res
}

/*  */

function validateProp (
	key,
	propOptions,
	propsData,
	vm
) {
	var prop = propOptions[key];
	var absent = !hasOwn(propsData, key);
	var value = propsData[key];
	// boolean casting
	var booleanIndex = getTypeIndex(Boolean, prop.type);
	if (booleanIndex > -1) {
		if (absent && !hasOwn(prop, 'default')) {
			value = false;
		} else if (value === '' || value === hyphenate(key)) {
			// only cast empty string / same name to boolean if
			// boolean has higher priority
			var stringIndex = getTypeIndex(String, prop.type);
			if (stringIndex < 0 || booleanIndex < stringIndex) {
				value = true;
			}
		}
	}
	// check default value
	if (value === undefined) {
		value = getPropDefaultValue(vm, prop, key);
		// since the default value is a fresh copy,
		// make sure to observe it.
		var prevShouldObserve = shouldObserve;
		toggleObserving(true);
		observe(value);
		toggleObserving(prevShouldObserve);
	}
	{
		assertProp(prop, key, value, vm, absent);
	}
	return value
}

/**
 * Get the default value of a prop.
 */
function getPropDefaultValue (vm, prop, key) {
	// no default, return undefined
	if (!hasOwn(prop, 'default')) {
		return undefined
	}
	var def = prop.default;
	// warn against non-factory defaults for Object & Array
	if ("development" !== 'production' && isObject(def)) {
		warn(
			'Invalid default value for prop "' + key + '": ' +
			'Props with type Object/Array must use a factory function ' +
			'to return the default value.',
			vm
		);
	}
	// the raw prop value was also undefined from previous render,
	// return previous default value to avoid unnecessary watcher trigger
	if (vm && vm.$options.propsData &&
		vm.$options.propsData[key] === undefined &&
		vm._props[key] !== undefined
	) {
		return vm._props[key]
	}
	// call factory function for non-Function types
	// a value is Function if its prototype is function even across different execution context
	return typeof def === 'function' && getType(prop.type) !== 'Function'
		? def.call(vm)
		: def
}

/**
 * Assert whether a prop is valid.
 */
function assertProp (
	prop,
	name,
	value,
	vm,
	absent
) {
	if (prop.required && absent) {
		warn(
			'Missing required prop: "' + name + '"',
			vm
		);
		return
	}
	if (value == null && !prop.required) {
		return
	}
	var type = prop.type;
	var valid = !type || type === true;
	var expectedTypes = [];
	if (type) {
		if (!Array.isArray(type)) {
			type = [type];
		}
		for (var i = 0; i < type.length && !valid; i++) {
			var assertedType = assertType(value, type[i]);
			expectedTypes.push(assertedType.expectedType || '');
			valid = assertedType.valid;
		}
	}
	if (!valid) {
		warn(
			"Invalid prop: type check failed for prop \"" + name + "\"." +
			" Expected " + (expectedTypes.map(capitalize).join(', ')) +
			", got " + (toRawType(value)) + ".",
			vm
		);
		return
	}
	var validator = prop.validator;
	if (validator) {
		if (!validator(value)) {
			warn(
				'Invalid prop: custom validator check failed for prop "' + name + '".',
				vm
			);
		}
	}
}

var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;

function assertType (value, type) {
	var valid;
	var expectedType = getType(type);
	if (simpleCheckRE.test(expectedType)) {
		var t = typeof value;
		valid = t === expectedType.toLowerCase();
		// for primitive wrapper objects
		if (!valid && t === 'object') {
			valid = value instanceof type;
		}
	} else if (expectedType === 'Object') {
		valid = isPlainObject(value);
	} else if (expectedType === 'Array') {
		valid = Array.isArray(value);
	} else {
		valid = value instanceof type;
	}
	return {
		valid: valid,
		expectedType: expectedType
	}
}

/**
 * Use function string name to check built-in types,
 * because a simple equality check will fail when running
 * across different vms / iframes.
 */
function getType (fn) {
	var match = fn && fn.toString().match(/^\s*function (\w+)/);
	return match ? match[1] : ''
}

function isSameType (a, b) {
	return getType(a) === getType(b)
}

function getTypeIndex (type, expectedTypes) {
	if (!Array.isArray(expectedTypes)) {
		return isSameType(expectedTypes, type) ? 0 : -1
	}
	for (var i = 0, len = expectedTypes.length; i < len; i++) {
		if (isSameType(expectedTypes[i], type)) {
			return i
		}
	}
	return -1
}

/*  */

function handleError (err, vm, info) {
	if (vm) {
		var cur = vm;
		while ((cur = cur.$parent)) {
			var hooks = cur.$options.errorCaptured;
			if (hooks) {
				for (var i = 0; i < hooks.length; i++) {
					try {
						var capture = hooks[i].call(cur, err, vm, info) === false;
						if (capture) { return }
					} catch (e) {
						globalHandleError(e, cur, 'errorCaptured hook');
					}
				}
			}
		}
	}
	globalHandleError(err, vm, info);
}

function globalHandleError (err, vm, info) {
	if (config.errorHandler) {
		try {
			return config.errorHandler.call(null, err, vm, info)
		} catch (e) {
			logError(e, null, 'config.errorHandler');
		}
	}
	logError(err, vm, info);
}

function logError (err, vm, info) {
	{
		warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
	}
	/* istanbul ignore else */
	if ((inBrowser || inWeex) && typeof console !== 'undefined') {
		console.error(err);
	} else {
		throw err
	}
}

/*  */
/* globals MessageChannel */

var callbacks = [];
var pending = false;

function flushCallbacks () {
	pending = false;
	var copies = callbacks.slice(0);
	callbacks.length = 0;
	for (var i = 0; i < copies.length; i++) {
		copies[i]();
	}
}

// Here we have async deferring wrappers using both microtasks and (macro) tasks.
// In < 2.4 we used microtasks everywhere, but there are some scenarios where
// microtasks have too high a priority and fire in between supposedly
// sequential events (e.g. #4521, #6690) or even between bubbling of the same
// event (#6566). However, using (macro) tasks everywhere also has subtle problems
// when state is changed right before repaint (e.g. #6813, out-in transitions).
// Here we use microtask by default, but expose a way to force (macro) task when
// needed (e.g. in event handlers attached by v-on).
var microTimerFunc;
var macroTimerFunc;
var useMacroTask = false;

// Determine (macro) task defer implementation.
// Technically setImmediate should be the ideal choice, but it's only available
// in IE. The only polyfill that consistently queues the callback after all DOM
// events triggered in the same loop is by using MessageChannel.
/* istanbul ignore if */
if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
	macroTimerFunc = function () {
		setImmediate(flushCallbacks);
	};
} else if (typeof MessageChannel !== 'undefined' && (
	isNative(MessageChannel) ||
	// PhantomJS
	MessageChannel.toString() === '[object MessageChannelConstructor]'
)) {
	var channel = new MessageChannel();
	var port = channel.port2;
	channel.port1.onmessage = flushCallbacks;
	macroTimerFunc = function () {
		port.postMessage(1);
	};
} else {
	/* istanbul ignore next */
	macroTimerFunc = function () {
		setTimeout(flushCallbacks, 0);
	};
}

// Determine microtask defer implementation.
/* istanbul ignore next, $flow-disable-line */
if (typeof Promise !== 'undefined' && isNative(Promise)) {
	var p = Promise.resolve();
	microTimerFunc = function () {
		p.then(flushCallbacks);
		// in problematic UIWebViews, Promise.then doesn't completely break, but
		// it can get stuck in a weird state where callbacks are pushed into the
		// microtask queue but the queue isn't being flushed, until the browser
		// needs to do some other work, e.g. handle a timer. Therefore we can
		// "force" the microtask queue to be flushed by adding an empty timer.
		if (isIOS) { setTimeout(noop); }
	};
} else {
	// fallback to macro
	microTimerFunc = macroTimerFunc;
}

/**
 * Wrap a function so that if any code inside triggers state change,
 * the changes are queued using a (macro) task instead of a microtask.
 */
function withMacroTask (fn) {
	return fn._withTask || (fn._withTask = function () {
		useMacroTask = true;
		var res = fn.apply(null, arguments);
		useMacroTask = false;
		return res
	})
}

function nextTick (cb, ctx) {
	var _resolve;
	callbacks.push(function () {
		if (cb) {
			try {
				cb.call(ctx);
			} catch (e) {
				handleError(e, ctx, 'nextTick');
			}
		} else if (_resolve) {
			_resolve(ctx);
		}
	});
	if (!pending) {
		pending = true;
		if (useMacroTask) {
			macroTimerFunc();
		} else {
			microTimerFunc();
		}
	}
	// $flow-disable-line
	if (!cb && typeof Promise !== 'undefined') {
		return new Promise(function (resolve) {
			_resolve = resolve;
		})
	}
}

/*  */

var mark;
var measure;

{
	var perf = inBrowser && window.performance;
	/* istanbul ignore if */
	if (
		perf &&
		perf.mark &&
		perf.measure &&
		perf.clearMarks &&
		perf.clearMeasures
	) {
		mark = function (tag) { return perf.mark(tag); };
		measure = function (name, startTag, endTag) {
			perf.measure(name, startTag, endTag);
			perf.clearMarks(startTag);
			perf.clearMarks(endTag);
			perf.clearMeasures(name);
		};
	}
}

/* not type checking this file because flow doesn't play well with Proxy */

var initProxy;

{
	var allowedGlobals = makeMap(
		'Infinity,undefined,NaN,isFinite,isNaN,' +
		'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
		'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
		'require' // for Webpack/Browserify
	);

	var warnNonPresent = function (target, key) {
		warn(
			"Property or method \"" + key + "\" is not defined on the instance but " +
			'referenced during render. Make sure that this property is reactive, ' +
			'either in the data option, or for class-based components, by ' +
			'initializing the property. ' +
			'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
			target
		);
	};

	var hasProxy =
		typeof Proxy !== 'undefined' && isNative(Proxy);

	if (hasProxy) {
		var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
		config.keyCodes = new Proxy(config.keyCodes, {
			set: function set (target, key, value) {
				if (isBuiltInModifier(key)) {
					warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
					return false
				} else {
					target[key] = value;
					return true
				}
			}
		});
	}

	var hasHandler = {
		has: function has (target, key) {
			var has = key in target;
			var isAllowed = allowedGlobals(key) || key.charAt(0) === '_';
			if (!has && !isAllowed) {
				warnNonPresent(target, key);
			}
			return has || !isAllowed
		}
	};

	var getHandler = {
		get: function get (target, key) {
			if (typeof key === 'string' && !(key in target)) {
				warnNonPresent(target, key);
			}
			return target[key]
		}
	};

	initProxy = function initProxy (vm) {
		if (hasProxy) {
			// determine which proxy handler to use
			var options = vm.$options;
			var handlers = options.render && options.render._withStripped
				? getHandler
				: hasHandler;
			vm._renderProxy = new Proxy(vm, handlers);
		} else {
			vm._renderProxy = vm;
		}
	};
}

/*  */

var seenObjects = new _Set();

/**
 * Recursively traverse an object to evoke all converted
 * getters, so that every nested property inside the object
 * is collected as a "deep" dependency.
 */
function traverse (val) {
	_traverse(val, seenObjects);
	seenObjects.clear();
}

function _traverse (val, seen) {
	var i, keys;
	var isA = Array.isArray(val);
	if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
		return
	}
	if (val.__ob__) {
		var depId = val.__ob__.dep.id;
		if (seen.has(depId)) {
			return
		}
		seen.add(depId);
	}
	if (isA) {
		i = val.length;
		while (i--) { _traverse(val[i], seen); }
	} else {
		keys = Object.keys(val);
		i = keys.length;
		while (i--) { _traverse(val[keys[i]], seen); }
	}
}

/*  */

var normalizeEvent = cached(function (name) {
	var passive = name.charAt(0) === '&';
	name = passive ? name.slice(1) : name;
	var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
	name = once$$1 ? name.slice(1) : name;
	var capture = name.charAt(0) === '!';
	name = capture ? name.slice(1) : name;
	return {
		name: name,
		once: once$$1,
		capture: capture,
		passive: passive
	}
});

function createFnInvoker (fns) {
	function invoker () {
		var arguments$1 = arguments;

		var fns = invoker.fns;
		if (Array.isArray(fns)) {
			var cloned = fns.slice();
			for (var i = 0; i < cloned.length; i++) {
				cloned[i].apply(null, arguments$1);
			}
		} else {
			// return handler return value for single handlers
			return fns.apply(null, arguments)
		}
	}
	invoker.fns = fns;
	return invoker
}

function updateListeners (
	on,
	oldOn,
	add,
	remove$$1,
	vm
) {
	var name, def, cur, old, event;
	for (name in on) {
		def = cur = on[name];
		old = oldOn[name];
		event = normalizeEvent(name);
		/* istanbul ignore if */
		if (isUndef(cur)) {
			"development" !== 'production' && warn(
				"Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
				vm
			);
		} else if (isUndef(old)) {
			if (isUndef(cur.fns)) {
				cur = on[name] = createFnInvoker(cur);
			}
			add(event.name, cur, event.once, event.capture, event.passive, event.params);
		} else if (cur !== old) {
			old.fns = cur;
			on[name] = old;
		}
	}
	for (name in oldOn) {
		if (isUndef(on[name])) {
			event = normalizeEvent(name);
			remove$$1(event.name, oldOn[name], event.capture);
		}
	}
}

/*  */

function mergeVNodeHook (def, hookKey, hook) {
	if (def instanceof VNode) {
		def = def.data.hook || (def.data.hook = {});
	}
	var invoker;
	var oldHook = def[hookKey];

	function wrappedHook () {
		hook.apply(this, arguments);
		// important: remove merged hook to ensure it's called only once
		// and prevent memory leak
		remove(invoker.fns, wrappedHook);
	}

	if (isUndef(oldHook)) {
		// no existing hook
		invoker = createFnInvoker([wrappedHook]);
	} else {
		/* istanbul ignore if */
		if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
			// already a merged invoker
			invoker = oldHook;
			invoker.fns.push(wrappedHook);
		} else {
			// existing plain hook
			invoker = createFnInvoker([oldHook, wrappedHook]);
		}
	}

	invoker.merged = true;
	def[hookKey] = invoker;
}

/*  */

function extractPropsFromVNodeData (
	data,
	Ctor,
	tag
) {
	// we are only extracting raw values here.
	// validation and default values are handled in the child
	// component itself.
	var propOptions = Ctor.options.props;
	if (isUndef(propOptions)) {
		return
	}
	var res = {};
	var attrs = data.attrs;
	var props = data.props;
	if (isDef(attrs) || isDef(props)) {
		for (var key in propOptions) {
			var altKey = hyphenate(key);
			{
				var keyInLowerCase = key.toLowerCase();
				if (
					key !== keyInLowerCase &&
					attrs && hasOwn(attrs, keyInLowerCase)
				) {
					tip(
						"Prop \"" + keyInLowerCase + "\" is passed to component " +
						(formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
						" \"" + key + "\". " +
						"Note that HTML attributes are case-insensitive and camelCased " +
						"props need to use their kebab-case equivalents when using in-DOM " +
						"templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
					);
				}
			}
			checkProp(res, props, key, altKey, true) ||
			checkProp(res, attrs, key, altKey, false);
		}
	}
	return res
}

function checkProp (
	res,
	hash,
	key,
	altKey,
	preserve
) {
	if (isDef(hash)) {
		if (hasOwn(hash, key)) {
			res[key] = hash[key];
			if (!preserve) {
				delete hash[key];
			}
			return true
		} else if (hasOwn(hash, altKey)) {
			res[key] = hash[altKey];
			if (!preserve) {
				delete hash[altKey];
			}
			return true
		}
	}
	return false
}

/*  */

// The template compiler attempts to minimize the need for normalization by
// statically analyzing the template at compile time.
//
// For plain HTML markup, normalization can be completely skipped because the
// generated render function is guaranteed to return Array<VNode>. There are
// two cases where extra normalization is needed:

// 1. When the children contains components - because a functional component
// may return an Array instead of a single root. In this case, just a simple
// normalization is needed - if any child is an Array, we flatten the whole
// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
// because functional components already normalize their own children.
function simpleNormalizeChildren (children) {
	for (var i = 0; i < children.length; i++) {
		if (Array.isArray(children[i])) {
			return Array.prototype.concat.apply([], children)
		}
	}
	return children
}

// 2. When the children contains constructs that always generated nested Arrays,
// e.g. <template>, <slot>, v-for, or when the children is provided by user
// with hand-written render functions / JSX. In such cases a full normalization
// is needed to cater to all possible types of children values.
function normalizeChildren (children) {
	return isPrimitive(children)
		? [createTextVNode(children)]
		: Array.isArray(children)
			? normalizeArrayChildren(children)
			: undefined
}

function isTextNode (node) {
	return isDef(node) && isDef(node.text) && isFalse(node.isComment)
}

function normalizeArrayChildren (children, nestedIndex) {
	var res = [];
	var i, c, lastIndex, last;
	for (i = 0; i < children.length; i++) {
		c = children[i];
		if (isUndef(c) || typeof c === 'boolean') { continue }
		lastIndex = res.length - 1;
		last = res[lastIndex];
		//  nested
		if (Array.isArray(c)) {
			if (c.length > 0) {
				c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
				// merge adjacent text nodes
				if (isTextNode(c[0]) && isTextNode(last)) {
					res[lastIndex] = createTextVNode(last.text + (c[0]).text);
					c.shift();
				}
				res.push.apply(res, c);
			}
		} else if (isPrimitive(c)) {
			if (isTextNode(last)) {
				// merge adjacent text nodes
				// this is necessary for SSR hydration because text nodes are
				// essentially merged when rendered to HTML strings
				res[lastIndex] = createTextVNode(last.text + c);
			} else if (c !== '') {
				// convert primitive to vnode
				res.push(createTextVNode(c));
			}
		} else {
			if (isTextNode(c) && isTextNode(last)) {
				// merge adjacent text nodes
				res[lastIndex] = createTextVNode(last.text + c.text);
			} else {
				// default key for nested array children (likely generated by v-for)
				if (isTrue(children._isVList) &&
					isDef(c.tag) &&
					isUndef(c.key) &&
					isDef(nestedIndex)) {
					c.key = "__vlist" + nestedIndex + "_" + i + "__";
				}
				res.push(c);
			}
		}
	}
	return res
}

/*  */

function ensureCtor (comp, base) {
	if (
		comp.__esModule ||
		(hasSymbol && comp[Symbol.toStringTag] === 'Module')
	) {
		comp = comp.default;
	}
	return isObject(comp)
		? base.extend(comp)
		: comp
}

function createAsyncPlaceholder (
	factory,
	data,
	context,
	children,
	tag
) {
	var node = createEmptyVNode();
	node.asyncFactory = factory;
	node.asyncMeta = { data: data, context: context, children: children, tag: tag };
	return node
}

function resolveAsyncComponent (
	factory,
	baseCtor,
	context
) {
	if (isTrue(factory.error) && isDef(factory.errorComp)) {
		return factory.errorComp
	}

	if (isDef(factory.resolved)) {
		return factory.resolved
	}

	if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
		return factory.loadingComp
	}

	if (isDef(factory.contexts)) {
		// already pending
		factory.contexts.push(context);
	} else {
		var contexts = factory.contexts = [context];
		var sync = true;

		var forceRender = function () {
			for (var i = 0, l = contexts.length; i < l; i++) {
				contexts[i].$forceUpdate();
			}
		};

		var resolve = once(function (res) {
			// cache resolved
			factory.resolved = ensureCtor(res, baseCtor);
			// invoke callbacks only if this is not a synchronous resolve
			// (async resolves are shimmed as synchronous during SSR)
			if (!sync) {
				forceRender();
			}
		});

		var reject = once(function (reason) {
			"development" !== 'production' && warn(
				"Failed to resolve async component: " + (String(factory)) +
				(reason ? ("\nReason: " + reason) : '')
			);
			if (isDef(factory.errorComp)) {
				factory.error = true;
				forceRender();
			}
		});

		var res = factory(resolve, reject);

		if (isObject(res)) {
			if (typeof res.then === 'function') {
				// () => Promise
				if (isUndef(factory.resolved)) {
					res.then(resolve, reject);
				}
			} else if (isDef(res.component) && typeof res.component.then === 'function') {
				res.component.then(resolve, reject);

				if (isDef(res.error)) {
					factory.errorComp = ensureCtor(res.error, baseCtor);
				}

				if (isDef(res.loading)) {
					factory.loadingComp = ensureCtor(res.loading, baseCtor);
					if (res.delay === 0) {
						factory.loading = true;
					} else {
						setTimeout(function () {
							if (isUndef(factory.resolved) && isUndef(factory.error)) {
								factory.loading = true;
								forceRender();
							}
						}, res.delay || 200);
					}
				}

				if (isDef(res.timeout)) {
					setTimeout(function () {
						if (isUndef(factory.resolved)) {
							reject(
								"timeout (" + (res.timeout) + "ms)"
							);
						}
					}, res.timeout);
				}
			}
		}

		sync = false;
		// return in case resolved synchronously
		return factory.loading
			? factory.loadingComp
			: factory.resolved
	}
}

/*  */

function isAsyncPlaceholder (node) {
	return node.isComment && node.asyncFactory
}

/*  */

function getFirstComponentChild (children) {
	if (Array.isArray(children)) {
		for (var i = 0; i < children.length; i++) {
			var c = children[i];
			if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
				return c
			}
		}
	}
}

/*  */

/*  */

function initEvents (vm) {
	vm._events = Object.create(null);
	vm._hasHookEvent = false;
	// init parent attached events
	var listeners = vm.$options._parentListeners;
	if (listeners) {
		updateComponentListeners(vm, listeners);
	}
}

var target;

function add (event, fn, once) {
	if (once) {
		target.$once(event, fn);
	} else {
		target.$on(event, fn);
	}
}

function remove$1 (event, fn) {
	target.$off(event, fn);
}

function updateComponentListeners (
	vm,
	listeners,
	oldListeners
) {
	target = vm;
	updateListeners(listeners, oldListeners || {}, add, remove$1, vm);
	target = undefined;
}


/*  */



/**
 * Runtime helper for resolving raw children VNodes into a slot object.
 */
function resolveSlots (
	children,
	context
) {
	var slots = {};
	if (!children) {
		return slots
	}
	for (var i = 0, l = children.length; i < l; i++) {
		var child = children[i];
		var data = child.data;
		// remove slot attribute if the node is resolved as a Vue slot node
		if (data && data.attrs && data.attrs.slot) {
			delete data.attrs.slot;
		}
		// named slots should only be respected if the vnode was rendered in the
		// same context.
		if ((child.context === context || child.fnContext === context) &&
			data && data.slot != null
		) {
			var name = data.slot;
			var slot = (slots[name] || (slots[name] = []));
			if (child.tag === 'template') {
				slot.push.apply(slot, child.children || []);
			} else {
				slot.push(child);
			}
		} else {
			(slots.default || (slots.default = [])).push(child);
		}
	}
	// ignore slots that contains only whitespace
	for (var name$1 in slots) {
		if (slots[name$1].every(isWhitespace)) {
			delete slots[name$1];
		}
	}
	return slots
}

function isWhitespace (node) {
	return (node.isComment && !node.asyncFactory) || node.text === ' '
}

function resolveScopedSlots (
	fns, // see flow/vnode
	res
) {
	res = res || {};
	for (var i = 0; i < fns.length; i++) {
		if (Array.isArray(fns[i])) {
			resolveScopedSlots(fns[i], res);
		} else {
			res[fns[i].key] = fns[i].fn;
		}
	}
	return res
}

/*  */

var activeInstance = null;
var isUpdatingChildComponent = false;

function initLifecycle (vm) {
	var options = vm.$options;

	// locate first non-abstract parent
	var parent = options.parent;
	if (parent && !options.abstract) {
		while (parent.$options.abstract && parent.$parent) {
			parent = parent.$parent;
		}
		parent.$children.push(vm);
	}

	vm.$parent = parent;
	vm.$root = parent ? parent.$root : vm;

	vm.$children = [];
	vm.$refs = {};

	vm._watcher = null;
	vm._inactive = null;
	vm._directInactive = false;
	vm._isMounted = false;
	vm._isDestroyed = false;
	vm._isBeingDestroyed = false;
}
function mountComponent (
	vm,
	el,
	hydrating
) {

	vm.$el = el;

	if (!vm.$options.render) {
		vm.$options.render = createEmptyVNode;
		{
			/* istanbul ignore if */
			if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
				vm.$options.el || el) {
				warn(
					'You are using the runtime-only build of Vue where the template ' +
					'compiler is not available. Either pre-compile the templates into ' +
					'render functions, or use the compiler-included build.',
					vm
				);
			} else {
				warn(
					'Failed to mount component: template or render function not defined.',
					vm
				);
			}
		}
	}

	callHook(vm, 'beforeMount');

	var updateComponent;

	/* istanbul ignore if */
	if ("development" !== 'production' && config.performance && mark) {
		updateComponent = function () {
			var name = vm._name;
			var id = vm._uid;
			var startTag = "vue-perf-start:" + id;
			var endTag = "vue-perf-end:" + id;

			mark(startTag);
			var vnode = vm._render();
			mark(endTag);
			measure(("vue " + name + " render"), startTag, endTag);

			mark(startTag);
			vm._update(vnode, hydrating);
			mark(endTag);
			measure(("vue " + name + " patch"), startTag, endTag);
		};
	} else {
		updateComponent = function () {
			vm._update(vm._render(), hydrating);
		};
	}

	// we set this to vm._watcher inside the watcher's constructor
	// since the watcher's initial patch may call $forceUpdate (e.g. inside child
	// component's mounted hook), which relies on vm._watcher being already defined
	new Watcher(vm, updateComponent, noop, null, true /* isRenderWatcher */);
	hydrating = false;

	// manually mounted instance, call mounted on self
	// mounted is called for render-created child components in its inserted hook
	if (vm.$vnode == null) {
		vm._isMounted = true;
		callHook(vm, 'mounted');
	}
	return vm
}

function updateChildComponent (
	vm,
	propsData,
	listeners,
	parentVnode,
	renderChildren
) {
	{
		isUpdatingChildComponent = true;
	}

	// determine whether component has slot children
	// we need to do this before overwriting $options._renderChildren
	var hasChildren = !!(
		renderChildren ||               // has new static slots
		vm.$options._renderChildren ||  // has old static slots
		parentVnode.data.scopedSlots || // has new scoped slots
		vm.$scopedSlots !== emptyObject // has old scoped slots
	);

	vm.$options._parentVnode = parentVnode;
	vm.$vnode = parentVnode; // update vm's placeholder node without re-render

	if (vm._vnode) { // update child tree's parent
		vm._vnode.parent = parentVnode;
	}
	vm.$options._renderChildren = renderChildren;

	// update $attrs and $listeners hash
	// these are also reactive so they may trigger child update if the child
	// used them during render
	vm.$attrs = parentVnode.data.attrs || emptyObject;
	vm.$listeners = listeners || emptyObject;

	// update props
	if (propsData && vm.$options.props) {
		toggleObserving(false);
		var props = vm._props;
		var propKeys = vm.$options._propKeys || [];
		for (var i = 0; i < propKeys.length; i++) {
			var key = propKeys[i];
			var propOptions = vm.$options.props; // wtf flow?
			props[key] = validateProp(key, propOptions, propsData, vm);
		}
		toggleObserving(true);
		// keep a copy of raw propsData
		vm.$options.propsData = propsData;
	}

	// update listeners
	listeners = listeners || emptyObject;
	var oldListeners = vm.$options._parentListeners;
	vm.$options._parentListeners = listeners;
	updateComponentListeners(vm, listeners, oldListeners);

	// resolve slots + force update if has children
	if (hasChildren) {
		vm.$slots = resolveSlots(renderChildren, parentVnode.context);
		vm.$forceUpdate();
	}

	{
		isUpdatingChildComponent = false;
	}
}

function isInInactiveTree (vm) {
	while (vm && (vm = vm.$parent)) {
		if (vm._inactive) { return true }
	}
	return false
}

function activateChildComponent (vm, direct) {
	if (direct) {
		vm._directInactive = false;
		if (isInInactiveTree(vm)) {
			return
		}
	} else if (vm._directInactive) {
		return
	}
	if (vm._inactive || vm._inactive === null) {
		vm._inactive = false;
		for (var i = 0; i < vm.$children.length; i++) {
			activateChildComponent(vm.$children[i]);
		}
		callHook(vm, 'activated');
	}
}

function deactivateChildComponent (vm, direct) {
	if (direct) {
		vm._directInactive = true;
		if (isInInactiveTree(vm)) {
			return
		}
	}
	if (!vm._inactive) {
		vm._inactive = true;
		for (var i = 0; i < vm.$children.length; i++) {
			deactivateChildComponent(vm.$children[i]);
		}
		callHook(vm, 'deactivated');
	}
}

function callHook (vm, hook) {
	// #7573 disable dep collection when invoking lifecycle hooks
	pushTarget();
	var handlers = vm.$options[hook];
	if (handlers) {
		for (var i = 0, j = handlers.length; i < j; i++) {
			try {
				handlers[i].call(vm);
			} catch (e) {
				handleError(e, vm, (hook + " hook"));
			}
		}
	}
	if (vm._hasHookEvent) {
		vm.$emit('hook:' + hook);
	}
	popTarget();
}

/*  */


var MAX_UPDATE_COUNT = 100;

var queue = [];
var activatedChildren = [];
var has = {};
var circular = {};
var waiting = false;
var flushing = false;
var index = 0;

/**
 * Reset the scheduler's state.
 */
function resetSchedulerState () {
	index = queue.length = activatedChildren.length = 0;
	has = {};
	{
		circular = {};
	}
	waiting = flushing = false;
}
function callUpdatedHooks (queue) {
	var i = queue.length;
	while (i--) {
		var watcher = queue[i];
		var vm = watcher.vm;
		if (vm._watcher === watcher && vm._isMounted) {
			callHook(vm, 'updated');
		}
	}
}

// 这里原先是 flushSchedulerQueue

/**
 * Queue a kept-alive component that was activated during patch.
 * The queue will be processed after the entire tree has been patched.
 */
function queueActivatedComponent (vm) {
	// setting _inactive to false here so that a render function can
	// rely on checking whether it's in an inactive tree (e.g. router-view)
	vm._inactive = false;
	activatedChildren.push(vm);
}

function callActivatedHooks (queue) {
	for (var i = 0; i < queue.length; i++) {
		queue[i]._inactive = true;
		activateChildComponent(queue[i], true /* true */);
	}
}


/*  */

var uid$1 = 0;

// Wathcer

/*  */

var sharedPropertyDefinition = {
	enumerable: true,
	configurable: true,
	get: noop,
	set: noop
};

function proxy (target, sourceKey, key) {
	sharedPropertyDefinition.get = function proxyGetter () {
		return this[sourceKey][key]
	};
	sharedPropertyDefinition.set = function proxySetter (val) {
		this[sourceKey][key] = val;
	};
	Object.defineProperty(target, key, sharedPropertyDefinition);
}

function initState (vm) {
	vm._watchers = [];
	var opts = vm.$options;
	if (opts.props) { initProps(vm, opts.props); }
	if (opts.methods) { initMethods(vm, opts.methods); }
	if (opts.data) {
		initData(vm);
	} else {
		observe(vm._data = {}, true /* asRootData */);
	}
	if (opts.computed) { initComputed(vm, opts.computed); }
	if (opts.watch && opts.watch !== nativeWatch) {
		initWatch(vm, opts.watch);
	}
}

function initProps (vm, propsOptions) {
	var propsData = vm.$options.propsData || {};
	var props = vm._props = {};
	// cache prop keys so that future props updates can iterate using Array
	// instead of dynamic object key enumeration.
	var keys = vm.$options._propKeys = [];
	var isRoot = !vm.$parent;
	// root instance props should be converted
	if (!isRoot) {
		toggleObserving(false);
	}
	var loop = function ( key ) {
		keys.push(key);
		var value = validateProp(key, propsOptions, propsData, vm);
		/* istanbul ignore else */
		{
			var hyphenatedKey = hyphenate(key);
			if (isReservedAttribute(hyphenatedKey) ||
					config.isReservedAttr(hyphenatedKey)) {
				warn(
					("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."),
					vm
				);
			}
			defineReactive(props, key, value, function () {
				if (vm.$parent && !isUpdatingChildComponent) {
					warn(
						"Avoid mutating a prop directly since the value will be " +
						"overwritten whenever the parent component re-renders. " +
						"Instead, use a data or computed property based on the prop's " +
						"value. Prop being mutated: \"" + key + "\"",
						vm
					);
				}
			});
		}
		// static props are already proxied on the component's prototype
		// during Vue.extend(). We only need to proxy props defined at
		// instantiation here.
		if (!(key in vm)) {
			proxy(vm, "_props", key);
		}
	};

	for (var key in propsOptions) loop( key );
	toggleObserving(true);
}

function initData (vm) {
	var data = vm.$options.data;
	data = vm._data = typeof data === 'function'
		? getData(data, vm)
		: data || {};
	if (!isPlainObject(data)) {
		data = {};
		"development" !== 'production' && warn(
			'data functions should return an object:\n' +
			'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
			vm
		);
	}
	// proxy data on instance
	var keys = Object.keys(data);
	var props = vm.$options.props;
	var methods = vm.$options.methods;
	var i = keys.length;
	while (i--) {
		var key = keys[i];
		{
			if (methods && hasOwn(methods, key)) {
				warn(
					("Method \"" + key + "\" has already been defined as a data property."),
					vm
				);
			}
		}
		if (props && hasOwn(props, key)) {
			"development" !== 'production' && warn(
				"The data property \"" + key + "\" is already declared as a prop. " +
				"Use prop default value instead.",
				vm
			);
		} else if (!isReserved(key)) {
			proxy(vm, "_data", key);
		}
	}
	// observe data
	observe(data, true /* asRootData */);
}

function getData (data, vm) {
	// #7573 disable dep collection when invoking data getters
	pushTarget();
	try {
		return data.call(vm, vm)
	} catch (e) {
		handleError(e, vm, "data()");
		return {}
	} finally {
		popTarget();
	}
}

var computedWatcherOptions = { lazy: true };

function initComputed (vm, computed) {
	// $flow-disable-line
	var watchers = vm._computedWatchers = Object.create(null);
	// computed properties are just getters during SSR
	var isSSR = isServerRendering();

	for (var key in computed) {
		var userDef = computed[key];
		var getter = typeof userDef === 'function' ? userDef : userDef.get;
		if ("development" !== 'production' && getter == null) {
			warn(
				("Getter is missing for computed property \"" + key + "\"."),
				vm
			);
		}

		if (!isSSR) {
			// create internal watcher for the computed property.
			watchers[key] = new Watcher(
				vm,
				getter || noop,
				noop,
				computedWatcherOptions
			);
		}

		// component-defined computed properties are already defined on the
		// component prototype. We only need to define computed properties defined
		// at instantiation here.
		if (!(key in vm)) {
			defineComputed(vm, key, userDef);
		} else {
			if (key in vm.$data) {
				warn(("The computed property \"" + key + "\" is already defined in data."), vm);
			} else if (vm.$options.props && key in vm.$options.props) {
				warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
			}
		}
	}
}

function defineComputed (
	target,
	key,
	userDef
) {
	var shouldCache = !isServerRendering();
	if (typeof userDef === 'function') {
		sharedPropertyDefinition.get = shouldCache
			? createComputedGetter(key)
			: userDef;
		sharedPropertyDefinition.set = noop;
	} else {
		sharedPropertyDefinition.get = userDef.get
			? shouldCache && userDef.cache !== false
				? createComputedGetter(key)
				: userDef.get
			: noop;
		sharedPropertyDefinition.set = userDef.set
			? userDef.set
			: noop;
	}
	if ("development" !== 'production' &&
			sharedPropertyDefinition.set === noop) {
		sharedPropertyDefinition.set = function () {
			warn(
				("Computed property \"" + key + "\" was assigned to but it has no setter."),
				this
			);
		};
	}
	Object.defineProperty(target, key, sharedPropertyDefinition);
}

function createComputedGetter (key) {
	return function computedGetter () {
		var watcher = this._computedWatchers && this._computedWatchers[key];
		if (watcher) {
			if (watcher.dirty) {
				watcher.evaluate();
			}
			if (Dep.target) {
				watcher.depend();
			}
			return watcher.value
		}
	}
}

function initMethods (vm, methods) {
	var props = vm.$options.props;
	for (var key in methods) {
		{
			if (methods[key] == null) {
				warn(
					"Method \"" + key + "\" has an undefined value in the component definition. " +
					"Did you reference the function correctly?",
					vm
				);
			}
			if (props && hasOwn(props, key)) {
				warn(
					("Method \"" + key + "\" has already been defined as a prop."),
					vm
				);
			}
			if ((key in vm) && isReserved(key)) {
				warn(
					"Method \"" + key + "\" conflicts with an existing Vue instance method. " +
					"Avoid defining component methods that start with _ or $."
				);
			}
		}
		vm[key] = methods[key] == null ? noop : bind(methods[key], vm);
	}
}

function initWatch (vm, watch) {
	for (var key in watch) {
		var handler = watch[key];
		if (Array.isArray(handler)) {
			for (var i = 0; i < handler.length; i++) {
				createWatcher(vm, key, handler[i]);
			}
		} else {
			createWatcher(vm, key, handler);
		}
	}
}

function createWatcher (
	vm,
	expOrFn,
	handler,
	options
) {
	if (isPlainObject(handler)) {
		options = handler;
		handler = handler.handler;
	}
	if (typeof handler === 'string') {
		handler = vm[handler];
	}
	return vm.$watch(expOrFn, handler, options)
}
/*  */

function initProvide (vm) {
	var provide = vm.$options.provide;
	if (provide) {
		vm._provided = typeof provide === 'function'
			? provide.call(vm)
			: provide;
	}
}

function initInjections (vm) {
	var result = resolveInject(vm.$options.inject, vm);
	if (result) {
		toggleObserving(false);
		Object.keys(result).forEach(function (key) {
			/* istanbul ignore else */
			{
				defineReactive(vm, key, result[key], function () {
					warn(
						"Avoid mutating an injected value directly since the changes will be " +
						"overwritten whenever the provided component re-renders. " +
						"injection being mutated: \"" + key + "\"",
						vm
					);
				});
			}
		});
		toggleObserving(true);
	}
}

function resolveInject (inject, vm) {
	if (inject) {
		// inject is :any because flow is not smart enough to figure out cached
		var result = Object.create(null);
		var keys = hasSymbol
			? Reflect.ownKeys(inject).filter(function (key) {
				/* istanbul ignore next */
				return Object.getOwnPropertyDescriptor(inject, key).enumerable
			})
			: Object.keys(inject);

		for (var i = 0; i < keys.length; i++) {
			var key = keys[i];
			var provideKey = inject[key].from;
			var source = vm;
			while (source) {
				if (source._provided && hasOwn(source._provided, provideKey)) {
					result[key] = source._provided[provideKey];
					break
				}
				source = source.$parent;
			}
			if (!source) {
				if ('default' in inject[key]) {
					var provideDefault = inject[key].default;
					result[key] = typeof provideDefault === 'function'
						? provideDefault.call(vm)
						: provideDefault;
				} else {
					warn(("Injection \"" + key + "\" not found"), vm);
				}
			}
		}
		return result
	}
}

/*  */

/**
 * Runtime helper for rendering v-for lists.
 */
function renderList (
	val,
	render
) {
	var ret, i, l, keys, key;
	if (Array.isArray(val) || typeof val === 'string') {
		ret = new Array(val.length);
		for (i = 0, l = val.length; i < l; i++) {
			ret[i] = render(val[i], i);
		}
	} else if (typeof val === 'number') {
		ret = new Array(val);
		for (i = 0; i < val; i++) {
			ret[i] = render(i + 1, i);
		}
	} else if (isObject(val)) {
		keys = Object.keys(val);
		ret = new Array(keys.length);
		for (i = 0, l = keys.length; i < l; i++) {
			key = keys[i];
			ret[i] = render(val[key], key, i);
		}
	}
	if (isDef(ret)) {
		(ret)._isVList = true;
	}
	return ret
}

/*  */

/**
 * Runtime helper for rendering <slot>
 */
function renderSlot (
	name,
	fallback,
	props,
	bindObject
) {
	var scopedSlotFn = this.$scopedSlots[name];
	var nodes;
	if (scopedSlotFn) { // scoped slot
		props = props || {};
		if (bindObject) {
			if ("development" !== 'production' && !isObject(bindObject)) {
				warn(
					'slot v-bind without argument expects an Object',
					this
				);
			}
			props = extend(extend({}, bindObject), props);
		}
		nodes = scopedSlotFn(props) || fallback;
	} else {
		var slotNodes = this.$slots[name];
		// warn duplicate slot usage
		if (slotNodes) {
			if ("development" !== 'production' && slotNodes._rendered) {
				warn(
					"Duplicate presence of slot \"" + name + "\" found in the same render tree " +
					"- this will likely cause render errors.",
					this
				);
			}
			slotNodes._rendered = true;
		}
		nodes = slotNodes || fallback;
	}

	var target = props && props.slot;
	if (target) {
		return this.$createElement('template', { slot: target }, nodes)
	} else {
		return nodes
	}
}

/*  */

/**
 * Runtime helper for resolving filters
 */
function resolveFilter (id) {
	return resolveAsset(this.$options, 'filters', id, true) || identity
}

/*  */

function isKeyNotMatch (expect, actual) {
	if (Array.isArray(expect)) {
		return expect.indexOf(actual) === -1
	} else {
		return expect !== actual
	}
}

/**
 * Runtime helper for checking keyCodes from config.
 * exposed as Vue.prototype._k
 * passing in eventKeyName as last argument separately for backwards compat
 */
function checkKeyCodes (
	eventKeyCode,
	key,
	builtInKeyCode,
	eventKeyName,
	builtInKeyName
) {
	var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
	if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
		return isKeyNotMatch(builtInKeyName, eventKeyName)
	} else if (mappedKeyCode) {
		return isKeyNotMatch(mappedKeyCode, eventKeyCode)
	} else if (eventKeyName) {
		return hyphenate(eventKeyName) !== key
	}
}

/*  */

/**
 * Runtime helper for merging v-bind="object" into a VNode's data.
 */
function bindObjectProps (
	data,
	tag,
	value,
	asProp,
	isSync
) {
	if (value) {
		if (!isObject(value)) {
			"development" !== 'production' && warn(
				'v-bind without argument expects an Object or Array value',
				this
			);
		} else {
			if (Array.isArray(value)) {
				value = toObject(value);
			}
			var hash;
			var loop = function ( key ) {
				if (
					key === 'class' ||
					key === 'style' ||
					isReservedAttribute(key)
				) {
					hash = data;
				} else {
					var type = data.attrs && data.attrs.type;
					hash = asProp || config.mustUseProp(tag, type, key)
						? data.domProps || (data.domProps = {})
						: data.attrs || (data.attrs = {});
				}
				if (!(key in hash)) {
					hash[key] = value[key];

					if (isSync) {
						var on = data.on || (data.on = {});
						on[("update:" + key)] = function ($event) {
							value[key] = $event;
						};
					}
				}
			};

			for (var key in value) loop( key );
		}
	}
	return data
}

/*  */

/**
 * Runtime helper for rendering static trees.
 */
function renderStatic (
	index,
	isInFor
) {
	var cached = this._staticTrees || (this._staticTrees = []);
	var tree = cached[index];
	// if has already-rendered static tree and not inside v-for,
	// we can reuse the same tree.
	if (tree && !isInFor) {
		return tree
	}
	// otherwise, render a fresh tree.
	tree = cached[index] = this.$options.staticRenderFns[index].call(
		this._renderProxy,
		null,
		this // for render fns generated for functional component templates
	);
	markStatic(tree, ("__static__" + index), false);
	return tree
}

/**
 * Runtime helper for v-once.
 * Effectively it means marking the node as static with a unique key.
 */
function markOnce (
	tree,
	index,
	key
) {
	markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
	return tree
}

function markStatic (
	tree,
	key,
	isOnce
) {
	if (Array.isArray(tree)) {
		for (var i = 0; i < tree.length; i++) {
			if (tree[i] && typeof tree[i] !== 'string') {
				markStaticNode(tree[i], (key + "_" + i), isOnce);
			}
		}
	} else {
		markStaticNode(tree, key, isOnce);
	}
}

function markStaticNode (node, key, isOnce) {
	node.isStatic = true;
	node.key = key;
	node.isOnce = isOnce;
}

/*  */

function bindObjectListeners (data, value) {
	if (value) {
		if (!isPlainObject(value)) {
			"development" !== 'production' && warn(
				'v-on without argument expects an Object value',
				this
			);
		} else {
			var on = data.on = data.on ? extend({}, data.on) : {};
			for (var key in value) {
				var existing = on[key];
				var ours = value[key];
				on[key] = existing ? [].concat(existing, ours) : ours;
			}
		}
	}
	return data
}

/*  */

function installRenderHelpers (target) {
	target._o = markOnce;
	target._n = toNumber;
	target._s = toString;
	target._l = renderList;
	target._t = renderSlot;
	target._q = looseEqual;
	target._i = looseIndexOf;
	target._m = renderStatic;
	target._f = resolveFilter;
	target._k = checkKeyCodes;
	target._b = bindObjectProps;
	target._v = createTextVNode;
	target._e = createEmptyVNode;
	target._u = resolveScopedSlots;
	target._g = bindObjectListeners;
}

/*  */

function FunctionalRenderContext (
	data,
	props,
	children,
	parent,
	Ctor
) {
	var options = Ctor.options;
	// ensure the createElement function in functional components
	// gets a unique context - this is necessary for correct named slot check
	var contextVm;
	if (hasOwn(parent, '_uid')) {
		contextVm = Object.create(parent);
		// $flow-disable-line
		contextVm._original = parent;
	} else {
		// the context vm passed in is a functional context as well.
		// in this case we want to make sure we are able to get a hold to the
		// real context instance.
		contextVm = parent;
		// $flow-disable-line
		parent = parent._original;
	}
	var isCompiled = isTrue(options._compiled);
	var needNormalization = !isCompiled;

	this.data = data;
	this.props = props;
	this.children = children;
	this.parent = parent;
	this.listeners = data.on || emptyObject;
	this.injections = resolveInject(options.inject, parent);
	this.slots = function () { return resolveSlots(children, parent); };

	// support for compiled functional template
	if (isCompiled) {
		// exposing $options for renderStatic()
		this.$options = options;
		// pre-resolve slots for renderSlot()
		this.$slots = this.slots();
		this.$scopedSlots = data.scopedSlots || emptyObject;
	}

	if (options._scopeId) {
		this._c = function (a, b, c, d) {
			var vnode = createElement(contextVm, a, b, c, d, needNormalization);
			if (vnode && !Array.isArray(vnode)) {
				vnode.fnScopeId = options._scopeId;
				vnode.fnContext = parent;
			}
			return vnode
		};
	} else {
		this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };
	}
}

installRenderHelpers(FunctionalRenderContext.prototype);

function createFunctionalComponent (
	Ctor,
	propsData,
	data,
	contextVm,
	children
) {
	var options = Ctor.options;
	var props = {};
	var propOptions = options.props;
	if (isDef(propOptions)) {
		for (var key in propOptions) {
			props[key] = validateProp(key, propOptions, propsData || emptyObject);
		}
	} else {
		if (isDef(data.attrs)) { mergeProps(props, data.attrs); }
		if (isDef(data.props)) { mergeProps(props, data.props); }
	}

	var renderContext = new FunctionalRenderContext(
		data,
		props,
		children,
		contextVm,
		Ctor
	);

	var vnode = options.render.call(null, renderContext._c, renderContext);

	if (vnode instanceof VNode) {
		return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options)
	} else if (Array.isArray(vnode)) {
		var vnodes = normalizeChildren(vnode) || [];
		var res = new Array(vnodes.length);
		for (var i = 0; i < vnodes.length; i++) {
			res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options);
		}
		return res
	}
}

function cloneAndMarkFunctionalResult (vnode, data, contextVm, options) {
	// #7817 clone node before setting fnContext, otherwise if the node is reused
	// (e.g. it was from a cached normal slot) the fnContext causes named slots
	// that should not be matched to match.
	var clone = cloneVNode(vnode);
	clone.fnContext = contextVm;
	clone.fnOptions = options;
	if (data.slot) {
		(clone.data || (clone.data = {})).slot = data.slot;
	}
	return clone
}

function mergeProps (to, from) {
	for (var key in from) {
		to[camelize(key)] = from[key];
	}
}

/*  */




// Register the component hook to weex native render engine.
// The hook will be triggered by native, not javascript.


// Updates the state of the component to weex native render engine.

/*  */

// https://github.com/Hanks10100/weex-native-directive/tree/master/component

// listening on native callback

/*  */

/*  */

// inline hooks to be invoked on component VNodes during patch
var componentVNodeHooks = {
	init: function init (
		vnode,
		hydrating,
		parentElm,
		refElm
	) {
		if (
			vnode.componentInstance &&
			!vnode.componentInstance._isDestroyed &&
			vnode.data.keepAlive
		) {
			// kept-alive components, treat as a patch
			var mountedNode = vnode; // work around flow
			componentVNodeHooks.prepatch(mountedNode, mountedNode);
		} else {
			var child = vnode.componentInstance = createComponentInstanceForVnode(
				vnode,
				activeInstance,
				parentElm,
				refElm
			);
			child.$mount(hydrating ? vnode.elm : undefined, hydrating);
		}
	},

	prepatch: function prepatch (oldVnode, vnode) {
		var options = vnode.componentOptions;
		var child = vnode.componentInstance = oldVnode.componentInstance;
		updateChildComponent(
			child,
			options.propsData, // updated props
			options.listeners, // updated listeners
			vnode, // new parent vnode
			options.children // new children
		);
	},

	insert: function insert (vnode) {
		var context = vnode.context;
		var componentInstance = vnode.componentInstance;
		if (!componentInstance._isMounted) {
			componentInstance._isMounted = true;
			callHook(componentInstance, 'mounted');
		}
		if (vnode.data.keepAlive) {
			if (context._isMounted) {
				// vue-router#1212
				// During updates, a kept-alive component's child components may
				// change, so directly walking the tree here may call activated hooks
				// on incorrect children. Instead we push them into a queue which will
				// be processed after the whole patch process ended.
				queueActivatedComponent(componentInstance);
			} else {
				activateChildComponent(componentInstance, true /* direct */);
			}
		}
	},

	destroy: function destroy (vnode) {
		var componentInstance = vnode.componentInstance;
		if (!componentInstance._isDestroyed) {
			if (!vnode.data.keepAlive) {
				componentInstance.$destroy();
			} else {
				deactivateChildComponent(componentInstance, true /* direct */);
			}
		}
	}
};

var hooksToMerge = Object.keys(componentVNodeHooks);

function createComponent (
	Ctor,
	data,
	context,
	children,
	tag
) {
	if (isUndef(Ctor)) {
		return
	}

	var baseCtor = context.$options._base;

	// plain options object: turn it into a constructor
	if (isObject(Ctor)) {
		Ctor = baseCtor.extend(Ctor);
	}

	// if at this stage it's not a constructor or an async component factory,
	// reject.
	if (typeof Ctor !== 'function') {
		{
			warn(("Invalid Component definition: " + (String(Ctor))), context);
		}
		return
	}

	// async component
	var asyncFactory;
	if (isUndef(Ctor.cid)) {
		asyncFactory = Ctor;
		Ctor = resolveAsyncComponent(asyncFactory, baseCtor, context);
		if (Ctor === undefined) {
			// return a placeholder node for async component, which is rendered
			// as a comment node but preserves all the raw information for the node.
			// the information will be used for async server-rendering and hydration.
			return createAsyncPlaceholder(
				asyncFactory,
				data,
				context,
				children,
				tag
			)
		}
	}

	data = data || {};

	// resolve constructor options in case global mixins are applied after
	// component constructor creation
	resolveConstructorOptions(Ctor);

	// transform component v-model data into props & events
	if (isDef(data.model)) {
		transformModel(Ctor.options, data);
	}

	// extract props
	var propsData = extractPropsFromVNodeData(data, Ctor, tag);

	// functional component
	if (isTrue(Ctor.options.functional)) {
		return createFunctionalComponent(Ctor, propsData, data, context, children)
	}

	// extract listeners, since these needs to be treated as
	// child component listeners instead of DOM listeners
	var listeners = data.on;
	// replace with listeners with .native modifier
	// so it gets processed during parent component patch.
	data.on = data.nativeOn;

	if (isTrue(Ctor.options.abstract)) {
		// abstract components do not keep anything
		// other than props & listeners & slot

		// work around flow
		var slot = data.slot;
		data = {};
		if (slot) {
			data.slot = slot;
		}
	}

	// install component management hooks onto the placeholder node
	installComponentHooks(data);

	// return a placeholder vnode
	var name = Ctor.options.name || tag;
	var vnode = new VNode(
		("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
		data, undefined, undefined, undefined, context,
		{ Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },
		asyncFactory
	);

	// Weex specific: invoke recycle-list optimized @render function for
	// extracting cell-slot template.
	// https://github.com/Hanks10100/weex-native-directive/tree/master/component
	/* istanbul ignore if */
	return vnode
}

function createComponentInstanceForVnode (
	vnode, // we know it's MountedComponentVNode but flow doesn't
	parent, // activeInstance in lifecycle state
	parentElm,
	refElm
) {
	var options = {
		_isComponent: true,
		parent: parent,
		_parentVnode: vnode,
		_parentElm: parentElm || null,
		_refElm: refElm || null
	};
	// check inline-template render functions
	var inlineTemplate = vnode.data.inlineTemplate;
	if (isDef(inlineTemplate)) {
		options.render = inlineTemplate.render;
		options.staticRenderFns = inlineTemplate.staticRenderFns;
	}
	return new vnode.componentOptions.Ctor(options)
}

function installComponentHooks (data) {
	var hooks = data.hook || (data.hook = {});
	for (var i = 0; i < hooksToMerge.length; i++) {
		var key = hooksToMerge[i];
		hooks[key] = componentVNodeHooks[key];
	}
}

// transform component v-model info (value and callback) into
// prop and event handler respectively.
function transformModel (options, data) {
	var prop = (options.model && options.model.prop) || 'value';
	var event = (options.model && options.model.event) || 'input';(data.props || (data.props = {}))[prop] = data.model.value;
	var on = data.on || (data.on = {});
	if (isDef(on[event])) {
		on[event] = [data.model.callback].concat(on[event]);
	} else {
		on[event] = data.model.callback;
	}
}

/*  */

var SIMPLE_NORMALIZE = 1;
var ALWAYS_NORMALIZE = 2;

// wrapper function for providing a more flexible interface
// without getting yelled at by flow
function createElement (
	context,
	tag,
	data,
	children,
	normalizationType,
	alwaysNormalize
) {
	if (Array.isArray(data) || isPrimitive(data)) {
		normalizationType = children;
		children = data;
		data = undefined;
	}
	if (isTrue(alwaysNormalize)) {
		normalizationType = ALWAYS_NORMALIZE;
	}
	return _createElement(context, tag, data, children, normalizationType)
}

function _createElement (
	context,
	tag,
	data,
	children,
	normalizationType
) {
	if (isDef(data) && isDef((data).__ob__)) {
		"development" !== 'production' && warn(
			"Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" +
			'Always create fresh vnode data objects in each render!',
			context
		);
		return createEmptyVNode()
	}
	// object syntax in v-bind
	if (isDef(data) && isDef(data.is)) {
		tag = data.is;
	}
	if (!tag) {
		// in case of component :is set to falsy value
		return createEmptyVNode()
	}
	// warn against non-primitive key
	if ("development" !== 'production' &&
		isDef(data) && isDef(data.key) && !isPrimitive(data.key)
	) {
		{
			warn(
				'Avoid using non-primitive value as key, ' +
				'use string/number value instead.',
				context
			);
		}
	}
	// support single function children as default scoped slot
	if (Array.isArray(children) &&
		typeof children[0] === 'function'
	) {
		data = data || {};
		data.scopedSlots = { default: children[0] };
		children.length = 0;
	}
	if (normalizationType === ALWAYS_NORMALIZE) {
		children = normalizeChildren(children);
	} else if (normalizationType === SIMPLE_NORMALIZE) {
		children = simpleNormalizeChildren(children);
	}
	var vnode, ns;
	if (typeof tag === 'string') {
		var Ctor;
		ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
		if (config.isReservedTag(tag)) {
			// platform built-in elements
			vnode = new VNode(
				config.parsePlatformTagName(tag), data, children,
				undefined, undefined, context
			);
		} else if (isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
			// component
			vnode = createComponent(Ctor, data, context, children, tag);
		} else {
			// unknown or unlisted namespaced elements
			// check at runtime because it may get assigned a namespace when its
			// parent normalizes children
			vnode = new VNode(
				tag, data, children,
				undefined, undefined, context
			);
		}
	} else {
		// direct component options / constructor
		vnode = createComponent(tag, data, context, children);
	}
	if (Array.isArray(vnode)) {
		return vnode
	} else if (isDef(vnode)) {
		if (isDef(ns)) { applyNS(vnode, ns); }
		if (isDef(data)) { registerDeepBindings(data); }
		return vnode
	} else {
		return createEmptyVNode()
	}
}

function applyNS (vnode, ns, force) {
	vnode.ns = ns;
	if (vnode.tag === 'foreignObject') {
		// use default namespace inside foreignObject
		ns = undefined;
		force = true;
	}
	if (isDef(vnode.children)) {
		for (var i = 0, l = vnode.children.length; i < l; i++) {
			var child = vnode.children[i];
			if (isDef(child.tag) && (
				isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
				applyNS(child, ns, force);
			}
		}
	}
}

// ref #5318
// necessary to ensure parent re-render when deep bindings like :style and
// :class are used on slot nodes
function registerDeepBindings (data) {
	if (isObject(data.style)) {
		traverse(data.style);
	}
	if (isObject(data.class)) {
		traverse(data.class);
	}
}

/*  */

function initRender (vm) {
	vm._vnode = null; // the root of the child tree
	vm._staticTrees = null; // v-once cached trees
	var options = vm.$options;
	var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
	var renderContext = parentVnode && parentVnode.context;
	vm.$slots = resolveSlots(options._renderChildren, renderContext);
	vm.$scopedSlots = emptyObject;
	// bind the createElement fn to this instance
	// so that we get proper render context inside it.
	// args order: tag, data, children, normalizationType, alwaysNormalize
	// internal version is used by render functions compiled from templates
	vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
	// normalization is always applied for the public version, used in
	// user-written render functions.
	vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };

	// $attrs & $listeners are exposed for easier HOC creation.
	// they need to be reactive so that HOCs using them are always updated
	var parentData = parentVnode && parentVnode.data;

	/* istanbul ignore else */
	{
		defineReactive(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {
			!isUpdatingChildComponent && warn("$attrs is readonly.", vm);
		}, true);
		defineReactive(vm, '$listeners', options._parentListeners || emptyObject, function () {
			!isUpdatingChildComponent && warn("$listeners is readonly.", vm);
		}, true);
	}
}

/*  */

var uid$3 = 0;

function initInternalComponent (vm, options) {
	var opts = vm.$options = Object.create(vm.constructor.options);
	// doing this because it's faster than dynamic enumeration.
	var parentVnode = options._parentVnode;
	opts.parent = options.parent;
	opts._parentVnode = parentVnode;
	opts._parentElm = options._parentElm;
	opts._refElm = options._refElm;

	var vnodeComponentOptions = parentVnode.componentOptions;
	opts.propsData = vnodeComponentOptions.propsData;
	opts._parentListeners = vnodeComponentOptions.listeners;
	opts._renderChildren = vnodeComponentOptions.children;
	opts._componentTag = vnodeComponentOptions.tag;

	if (options.render) {
		opts.render = options.render;
		opts.staticRenderFns = options.staticRenderFns;
	}
}

function resolveConstructorOptions (Ctor) {
	var options = Ctor.options;
	if (Ctor.super) {
		var superOptions = resolveConstructorOptions(Ctor.super);
		var cachedSuperOptions = Ctor.superOptions;
		if (superOptions !== cachedSuperOptions) {
			// super option changed,
			// need to resolve new options.
			Ctor.superOptions = superOptions;
			// check if there are any late-modified/attached options (#4976)
			var modifiedOptions = resolveModifiedOptions(Ctor);
			// update base extend options
			if (modifiedOptions) {
				extend(Ctor.extendOptions, modifiedOptions);
			}
			options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
			if (options.name) {
				options.components[options.name] = Ctor;
			}
		}
	}
	return options
}

function resolveModifiedOptions (Ctor) {
	var modified;
	var latest = Ctor.options;
	var extended = Ctor.extendOptions;
	var sealed = Ctor.sealedOptions;
	for (var key in latest) {
		if (latest[key] !== sealed[key]) {
			if (!modified) { modified = {}; }
			modified[key] = dedupe(latest[key], extended[key], sealed[key]);
		}
	}
	return modified
}

function dedupe (latest, extended, sealed) {
	// compare latest and sealed to ensure lifecycle hooks won't be duplicated
	// between merges
	if (Array.isArray(latest)) {
		var res = [];
		sealed = Array.isArray(sealed) ? sealed : [sealed];
		extended = Array.isArray(extended) ? extended : [extended];
		for (var i = 0; i < latest.length; i++) {
			// push original options and not sealed options to exclude duplicated options
			if (extended.indexOf(latest[i]) >= 0 || sealed.indexOf(latest[i]) < 0) {
				res.push(latest[i]);
			}
		}
		return res
	} else {
		return latest
	}
}


// 这里原先是 Vue
// 并且调用了很多 方法来新增 原型方法

/*  */

function initUse (Vue) {
	Vue.use = function (plugin) {
		var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
		if (installedPlugins.indexOf(plugin) > -1) {
			return this
		}

		// additional parameters
		var args = toArray(arguments, 1);
		args.unshift(this);
		if (typeof plugin.install === 'function') {
			plugin.install.apply(plugin, args);
		} else if (typeof plugin === 'function') {
			plugin.apply(null, args);
		}
		installedPlugins.push(plugin);
		return this
	};
}

/*  */

function initMixin$1 (Vue) {
	Vue.mixin = function (mixin) {
		this.options = mergeOptions(this.options, mixin);
		return this
	};
}

/*  */

function initExtend (Vue) {
	/**
	 * Each instance constructor, including Vue, has a unique
	 * cid. This enables us to create wrapped "child
	 * constructors" for prototypal inheritance and cache them.
	 */
	Vue.cid = 0;
	var cid = 1;

	/**
	 * Class inheritance
	 */
	Vue.extend = function (extendOptions) {
		extendOptions = extendOptions || {};
		var Super = this;
		var SuperId = Super.cid;
		var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
		if (cachedCtors[SuperId]) {
			return cachedCtors[SuperId]
		}

		var name = extendOptions.name || Super.options.name;
		if ("development" !== 'production' && name) {
			validateComponentName(name);
		}

		var Sub = function VueComponent (options) {
			this._init(options);
		};
		Sub.prototype = Object.create(Super.prototype);
		Sub.prototype.constructor = Sub;
		Sub.cid = cid++;
		Sub.options = mergeOptions(
			Super.options,
			extendOptions
		);
		Sub['super'] = Super;

		// For props and computed properties, we define the proxy getters on
		// the Vue instances at extension time, on the extended prototype. This
		// avoids Object.defineProperty calls for each instance created.
		if (Sub.options.props) {
			initProps$1(Sub);
		}
		if (Sub.options.computed) {
			initComputed$1(Sub);
		}

		// allow further extension/mixin/plugin usage
		Sub.extend = Super.extend;
		Sub.mixin = Super.mixin;
		Sub.use = Super.use;

		// create asset registers, so extended classes
		// can have their private assets too.
		ASSET_TYPES.forEach(function (type) {
			Sub[type] = Super[type];
		});
		// enable recursive self-lookup
		if (name) {
			Sub.options.components[name] = Sub;
		}

		// keep a reference to the super options at extension time.
		// later at instantiation we can check if Super's options have
		// been updated.
		Sub.superOptions = Super.options;
		Sub.extendOptions = extendOptions;
		Sub.sealedOptions = extend({}, Sub.options);

		// cache constructor
		cachedCtors[SuperId] = Sub;
		return Sub
	};
}

function initProps$1 (Comp) {
	var props = Comp.options.props;
	for (var key in props) {
		proxy(Comp.prototype, "_props", key);
	}
}

function initComputed$1 (Comp) {
	var computed = Comp.options.computed;
	for (var key in computed) {
		defineComputed(Comp.prototype, key, computed[key]);
	}
}

/*  */

function initAssetRegisters (Vue) {
	/**
	 * Create asset registration methods.
	 */
	ASSET_TYPES.forEach(function (type) {
		Vue[type] = function (
			id,
			definition
		) {
			if (!definition) {
				return this.options[type + 's'][id]
			} else {
				/* istanbul ignore if */
				if ("development" !== 'production' && type === 'component') {
					validateComponentName(id);
				}
				if (type === 'component' && isPlainObject(definition)) {
					definition.name = definition.name || id;
					definition = this.options._base.extend(definition);
				}
				if (type === 'directive' && typeof definition === 'function') {
					definition = { bind: definition, update: definition };
				}
				this.options[type + 's'][id] = definition;
				return definition
			}
		};
	});
}

/*  */

function getComponentName (opts) {
	return opts && (opts.Ctor.options.name || opts.tag)
}

function matches (pattern, name) {
	if (Array.isArray(pattern)) {
		return pattern.indexOf(name) > -1
	} else if (typeof pattern === 'string') {
		return pattern.split(',').indexOf(name) > -1
	} else if (isRegExp(pattern)) {
		return pattern.test(name)
	}
	/* istanbul ignore next */
	return false
}

function pruneCache (keepAliveInstance, filter) {
	var cache = keepAliveInstance.cache;
	var keys = keepAliveInstance.keys;
	var _vnode = keepAliveInstance._vnode;
	for (var key in cache) {
		var cachedNode = cache[key];
		if (cachedNode) {
			var name = getComponentName(cachedNode.componentOptions);
			if (name && !filter(name)) {
				pruneCacheEntry(cache, key, keys, _vnode);
			}
		}
	}
}

function pruneCacheEntry (
	cache,
	key,
	keys,
	current
) {
	var cached$$1 = cache[key];
	if (cached$$1 && (!current || cached$$1.tag !== current.tag)) {
		cached$$1.componentInstance.$destroy();
	}
	cache[key] = null;
	remove(keys, key);
}

var patternTypes = [String, RegExp, Array];

var KeepAlive = {
	
	name: 'keep-alive',
	abstract: true,

	props: {
		include: patternTypes,
		exclude: patternTypes,
		max: [String, Number]
	},

	created: function created () {
		this.cache = Object.create(null);
		this.keys = [];
	},

	destroyed: function destroyed () {
		var this$1 = this;

		for (var key in this$1.cache) {
			pruneCacheEntry(this$1.cache, key, this$1.keys);
		}
	},

	mounted: function mounted () {
		var this$1 = this;

		this.$watch('include', function (val) {
			pruneCache(this$1, function (name) { return matches(val, name); });
		});
		this.$watch('exclude', function (val) {
			pruneCache(this$1, function (name) { return !matches(val, name); });
		});
	},

	render: function render () {
		var slot = this.$slots.default;
		var vnode = getFirstComponentChild(slot);
		var componentOptions = vnode && vnode.componentOptions;
		if (componentOptions) {
			// check pattern
			var name = getComponentName(componentOptions);
			var ref = this;
			var include = ref.include;
			var exclude = ref.exclude;
			if (
				// not included
				(include && (!name || !matches(include, name))) ||
				// excluded
				(exclude && name && matches(exclude, name))
			) {
				return vnode
			}

			var ref$1 = this;
			var cache = ref$1.cache;
			var keys = ref$1.keys;
			var key = vnode.key == null
				// same constructor may get registered as different local components
				// so cid alone is not enough (#3269)
				? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '')
				: vnode.key;
			if (cache[key]) {
				vnode.componentInstance = cache[key].componentInstance;
				// make current key freshest
				remove(keys, key);
				keys.push(key);
			} else {
				cache[key] = vnode;
				keys.push(key);
				// prune oldest entry
				if (this.max && keys.length > parseInt(this.max)) {
					pruneCacheEntry(cache, keys[0], keys, this._vnode);
				}
			}

			vnode.data.keepAlive = true;
		}
		return vnode || (slot && slot[0])
	}
}

var builtInComponents = {
	KeepAlive: KeepAlive
}

/*  */

function initGlobalAPI (Vue) {
	// config
	var configDef = {};
	configDef.get = function () { return config; };
	{
		configDef.set = function () {
			warn(
				'Do not replace the Vue.config object, set individual fields instead.'
			);
		};
	}
	Object.defineProperty(Vue, 'config', configDef);

	// exposed util methods.
	// NOTE: these are not considered part of the public API - avoid relying on
	// them unless you are aware of the risk.
	Vue.util = {
		warn: warn,
		extend: extend,
		mergeOptions: mergeOptions,
		defineReactive: defineReactive
	};

	Vue.set = set;
	Vue.delete = del;
	Vue.nextTick = nextTick;

	Vue.options = Object.create(null);
	ASSET_TYPES.forEach(function (type) {
		Vue.options[type + 's'] = Object.create(null);
	});

	// this is used to identify the "base" constructor to extend all plain-object
	// components with in Weex's multi-instance scenarios.
	Vue.options._base = Vue;

	extend(Vue.options.components, builtInComponents);

	initUse(Vue);
	initMixin$1(Vue);
	initExtend(Vue);
	initAssetRegisters(Vue);
}

initGlobalAPI(Vue);

Object.defineProperty(Vue.prototype, '$isServer', {
	get: isServerRendering
});

Object.defineProperty(Vue.prototype, '$ssrContext', {
	get: function get () {
		/* istanbul ignore next */
		return this.$vnode && this.$vnode.ssrContext
	}
});

// expose FunctionalRenderContext for ssr runtime helper installation
Object.defineProperty(Vue, 'FunctionalRenderContext', {
	value: FunctionalRenderContext
});

Vue.version = '2.5.17';

/*  */

// these are reserved for web because they are directly compiled away
// during template compilation
var isReservedAttr = makeMap('style,class');

// attributes that should be using props for binding
var acceptValue = makeMap('input,textarea,option,select,progress');
var mustUseProp = function (tag, type, attr) {
	return (
		(attr === 'value' && acceptValue(tag)) && type !== 'button' ||
		(attr === 'selected' && tag === 'option') ||
		(attr === 'checked' && tag === 'input') ||
		(attr === 'muted' && tag === 'video')
	)
};

var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');

var isBooleanAttr = makeMap(
	'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
	'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
	'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
	'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
	'required,reversed,scoped,seamless,selected,sortable,translate,' +
	'truespeed,typemustmatch,visible'
);

var xlinkNS = 'http://www.w3.org/1999/xlink';

var isXlink = function (name) {
	return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
};

var getXlinkProp = function (name) {
	return isXlink(name) ? name.slice(6, name.length) : ''
};

var isFalsyAttrValue = function (val) {
	return val == null || val === false
};

/*  */

function genClassForVnode (vnode) {
	var data = vnode.data;
	var parentNode = vnode;
	var childNode = vnode;
	while (isDef(childNode.componentInstance)) {
		childNode = childNode.componentInstance._vnode;
		if (childNode && childNode.data) {
			data = mergeClassData(childNode.data, data);
		}
	}
	while (isDef(parentNode = parentNode.parent)) {
		if (parentNode && parentNode.data) {
			data = mergeClassData(data, parentNode.data);
		}
	}
	return renderClass(data.staticClass, data.class)
}

function mergeClassData (child, parent) {
	return {
		staticClass: concat(child.staticClass, parent.staticClass),
		class: isDef(child.class)
			? [child.class, parent.class]
			: parent.class
	}
}

function renderClass (
	staticClass,
	dynamicClass
) {
	if (isDef(staticClass) || isDef(dynamicClass)) {
		return concat(staticClass, stringifyClass(dynamicClass))
	}
	/* istanbul ignore next */
	return ''
}

function concat (a, b) {
	return a ? b ? (a + ' ' + b) : a : (b || '')
}

function stringifyClass (value) {
	if (Array.isArray(value)) {
		return stringifyArray(value)
	}
	if (isObject(value)) {
		return stringifyObject(value)
	}
	if (typeof value === 'string') {
		return value
	}
	/* istanbul ignore next */
	return ''
}

function stringifyArray (value) {
	var res = '';
	var stringified;
	for (var i = 0, l = value.length; i < l; i++) {
		if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
			if (res) { res += ' '; }
			res += stringified;
		}
	}
	return res
}

function stringifyObject (value) {
	var res = '';
	for (var key in value) {
		if (value[key]) {
			if (res) { res += ' '; }
			res += key;
		}
	}
	return res
}

/*  */

var namespaceMap = {
	svg: 'http://www.w3.org/2000/svg',
	math: 'http://www.w3.org/1998/Math/MathML'
};

var isHTMLTag = makeMap(
	'html,body,base,head,link,meta,style,title,' +
	'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
	'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
	'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
	's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
	'embed,object,param,source,canvas,script,noscript,del,ins,' +
	'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
	'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
	'output,progress,select,textarea,' +
	'details,dialog,menu,menuitem,summary,' +
	'content,element,shadow,template,blockquote,iframe,tfoot'
);

// this map is intentionally selective, only covering SVG elements that may
// contain child elements.
var isSVG = makeMap(
	'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
	'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
	'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
	true
);

var isPreTag = function (tag) { return tag === 'pre'; };

var isReservedTag = function (tag) {
	return isHTMLTag(tag) || isSVG(tag)
};

function getTagNamespace (tag) {
	if (isSVG(tag)) {
		return 'svg'
	}
	// basic support for MathML
	// note it doesn't support other MathML elements being component roots
	if (tag === 'math') {
		return 'math'
	}
}

var unknownElementCache = Object.create(null);
function isUnknownElement (tag) {
	/* istanbul ignore if */
	if (!inBrowser) {
		return true
	}
	if (isReservedTag(tag)) {
		return false
	}
	tag = tag.toLowerCase();
	/* istanbul ignore if */
	if (unknownElementCache[tag] != null) {
		return unknownElementCache[tag]
	}
	var el = document.createElement(tag);
	if (tag.indexOf('-') > -1) {
		// http://stackoverflow.com/a/28210364/1070244
		return (unknownElementCache[tag] = (
			el.constructor === window.HTMLUnknownElement ||
			el.constructor === window.HTMLElement
		))
	} else {
		return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
	}
}

var isTextInputType = makeMap('text,number,password,search,email,tel,url');

/*  */

/**
 * Query an element selector if it's not an element already.
 */
function query (el) {
	if (typeof el === 'string') {
		var selected = document.querySelector(el);
		if (!selected) {
			"development" !== 'production' && warn(
				'Cannot find element: ' + el
			);
			return document.createElement('div')
		}
		return selected
	} else {
		return el
	}
}


/*  */

var ref = {
	create: function create (_, vnode) {
		registerRef(vnode);
	},
	update: function update (oldVnode, vnode) {
		if (oldVnode.data.ref !== vnode.data.ref) {
			registerRef(oldVnode, true);
			registerRef(vnode);
		}
	},
	destroy: function destroy (vnode) {
		registerRef(vnode, true);
	}
}

function registerRef (vnode, isRemoval) {
	var key = vnode.data.ref;
	if (!isDef(key)) { return }

	var vm = vnode.context;
	var ref = vnode.componentInstance || vnode.elm;
	var refs = vm.$refs;
	if (isRemoval) {
		if (Array.isArray(refs[key])) {
			remove(refs[key], ref);
		} else if (refs[key] === ref) {
			refs[key] = undefined;
		}
	} else {
		if (vnode.data.refInFor) {
			if (!Array.isArray(refs[key])) {
				refs[key] = [ref];
			} else if (refs[key].indexOf(ref) < 0) {
				// $flow-disable-line
				refs[key].push(ref);
			}
		} else {
			refs[key] = ref;
		}
	}
}

/**
 * Virtual DOM patching algorithm based on Snabbdom by
 * Simon Friis Vindum (@paldepind)
 * Licensed under the MIT License
 * https://github.com/paldepind/snabbdom/blob/master/LICENSE
 *
 * modified by Evan You (@yyx990803)
 *
 * Not type-checking this because this file is perf-critical and the cost
 * of making flow understand it is not worth it.
 */

var emptyNode = new VNode('', {}, []);

var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];

function sameVnode (a, b) {
	return (
		a.key === b.key && (
			(
				a.tag === b.tag &&
				a.isComment === b.isComment &&
				isDef(a.data) === isDef(b.data) &&
				sameInputType(a, b)
			) || (
				isTrue(a.isAsyncPlaceholder) &&
				a.asyncFactory === b.asyncFactory &&
				isUndef(b.asyncFactory.error)
			)
		)
	)
}

function sameInputType (a, b) {
	if (a.tag !== 'input') { return true }
	var i;
	var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
	var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
	return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
}

function createKeyToOldIdx (children, beginIdx, endIdx) {
	var i, key;
	var map = {};
	for (i = beginIdx; i <= endIdx; ++i) {
		key = children[i].key;
		if (isDef(key)) { map[key] = i; }
	}
	return map
}

function createPatchFunction (backend) {
	var i, j;
	var cbs = {};

	var modules = backend.modules;
	var nodeOps = backend.nodeOps;

	for (i = 0; i < hooks.length; ++i) {
		cbs[hooks[i]] = [];
		for (j = 0; j < modules.length; ++j) {
			if (isDef(modules[j][hooks[i]])) {
				cbs[hooks[i]].push(modules[j][hooks[i]]);
			}
		}
	}

	function emptyNodeAt (elm) {
		return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
	}

	function createRmCb (childElm, listeners) {
		function remove () {
			if (--remove.listeners === 0) {
				removeNode(childElm);
			}
		}
		remove.listeners = listeners;
		return remove
	}

	function isUnknownElement$$1 (vnode, inVPre) {
		return (
			!inVPre &&
			!vnode.ns &&
			!(
				config.ignoredElements.length &&
				config.ignoredElements.some(function (ignore) {
					return isRegExp(ignore)
						? ignore.test(vnode.tag)
						: ignore === vnode.tag
				})
			) &&
			config.isUnknownElement(vnode.tag)
		)
	}

	var creatingElmInVPre = 0;


	function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
		var i = vnode.data;
		if (isDef(i)) {
			var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
			if (isDef(i = i.hook) && isDef(i = i.init)) {
				i(vnode, false /* hydrating */, parentElm, refElm);
			}
			// after calling the init hook, if the vnode is a child component
			// it should've created a child instance and mounted it. the child
			// component also has set the placeholder vnode's elm.
			// in that case we can just return the element and be done.
			if (isDef(vnode.componentInstance)) {
				initComponent(vnode, insertedVnodeQueue);
				if (isTrue(isReactivated)) {
					reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
				}
				return true
			}
		}
	}

	function initComponent (vnode, insertedVnodeQueue) {
		if (isDef(vnode.data.pendingInsert)) {
			insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
			vnode.data.pendingInsert = null;
		}
		vnode.elm = vnode.componentInstance.$el;
		if (isPatchable(vnode)) {
			invokeCreateHooks(vnode, insertedVnodeQueue);
			setScope(vnode);
		} else {
			// empty component root.
			// skip all element-related modules except for ref (#3455)
			registerRef(vnode);
			// make sure to invoke the insert hook
			insertedVnodeQueue.push(vnode);
		}
	}

	function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
		var i;
		// hack for #4339: a reactivated component with inner transition
		// does not trigger because the inner node's created hooks are not called
		// again. It's not ideal to involve module-specific logic in here but
		// there doesn't seem to be a better way to do it.
		var innerNode = vnode;
		while (innerNode.componentInstance) {
			innerNode = innerNode.componentInstance._vnode;
			if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
				for (i = 0; i < cbs.activate.length; ++i) {
					cbs.activate[i](emptyNode, innerNode);
				}
				insertedVnodeQueue.push(innerNode);
				break
			}
		}
		// unlike a newly created component,
		// a reactivated keep-alive component doesn't insert itself
		insert(parentElm, vnode.elm, refElm);
	}

	function createChildren (vnode, children, insertedVnodeQueue) {
		if (Array.isArray(children)) {
			{
				checkDuplicateKeys(children);
			}
			for (var i = 0; i < children.length; ++i) {
				createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
			}
		} else if (isPrimitive(vnode.text)) {
			nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
		}
	}

	function isPatchable (vnode) {
		while (vnode.componentInstance) {
			vnode = vnode.componentInstance._vnode;
		}
		return isDef(vnode.tag)
	}

	function invokeCreateHooks (vnode, insertedVnodeQueue) {
		for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
			cbs.create[i$1](emptyNode, vnode);
		}
		i = vnode.data.hook; // Reuse variable
		if (isDef(i)) {
			if (isDef(i.create)) { i.create(emptyNode, vnode); }
			if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }
		}
	}

	// set scope id attribute for scoped CSS.
	// this is implemented as a special case to avoid the overhead
	// of going through the normal attribute patching process.
	function setScope (vnode) {
		var i;
		if (isDef(i = vnode.fnScopeId)) {
			nodeOps.setStyleScope(vnode.elm, i);
		} else {
			var ancestor = vnode;
			while (ancestor) {
				if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
					nodeOps.setStyleScope(vnode.elm, i);
				}
				ancestor = ancestor.parent;
			}
		}
		// for slot content they should also get the scopeId from the host instance.
		if (isDef(i = activeInstance) &&
			i !== vnode.context &&
			i !== vnode.fnContext &&
			isDef(i = i.$options._scopeId)
		) {
			nodeOps.setStyleScope(vnode.elm, i);
		}
	}
	function invokeDestroyHook (vnode) {
		var i, j;
		var data = vnode.data;
		if (isDef(data)) {
			if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
			for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
		}
		if (isDef(i = vnode.children)) {
			for (j = 0; j < vnode.children.length; ++j) {
				invokeDestroyHook(vnode.children[j]);
			}
		}
	}

	function removeAndInvokeRemoveHook (vnode, rm) {
		if (isDef(rm) || isDef(vnode.data)) {
			var i;
			var listeners = cbs.remove.length + 1;
			if (isDef(rm)) {
				// we have a recursively passed down rm callback
				// increase the listeners count
				rm.listeners += listeners;
			} else {
				// directly removing
				rm = createRmCb(vnode.elm, listeners);
			}
			// recursively invoke hooks on child component root node
			if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
				removeAndInvokeRemoveHook(i, rm);
			}
			for (i = 0; i < cbs.remove.length; ++i) {
				cbs.remove[i](vnode, rm);
			}
			if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
				i(vnode, rm);
			} else {
				rm();
			}
		} else {
			removeNode(vnode.elm);
		}
	}

	function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
		var oldStartIdx = 0;
		var newStartIdx = 0;
		var oldEndIdx = oldCh.length - 1;
		var oldStartVnode = oldCh[0];
		var oldEndVnode = oldCh[oldEndIdx];
		var newEndIdx = newCh.length - 1;
		var newStartVnode = newCh[0];
		var newEndVnode = newCh[newEndIdx];
		var oldKeyToIdx, idxInOld, vnodeToMove, refElm;

		// removeOnly is a special flag used only by <transition-group>
		// to ensure removed elements stay in correct relative positions
		// during leaving transitions
		var canMove = !removeOnly;

		{
			checkDuplicateKeys(newCh);
		}

		while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
			if (isUndef(oldStartVnode)) {
				oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
			} else if (isUndef(oldEndVnode)) {
				oldEndVnode = oldCh[--oldEndIdx];
			} else if (sameVnode(oldStartVnode, newStartVnode)) {
				patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue);
				oldStartVnode = oldCh[++oldStartIdx];
				newStartVnode = newCh[++newStartIdx];
			} else if (sameVnode(oldEndVnode, newEndVnode)) {
				patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue);
				oldEndVnode = oldCh[--oldEndIdx];
				newEndVnode = newCh[--newEndIdx];
			} else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
				patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue);
				canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
				oldStartVnode = oldCh[++oldStartIdx];
				newEndVnode = newCh[--newEndIdx];
			} else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
				patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue);
				canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
				oldEndVnode = oldCh[--oldEndIdx];
				newStartVnode = newCh[++newStartIdx];
			} else {
				if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
				idxInOld = isDef(newStartVnode.key)
					? oldKeyToIdx[newStartVnode.key]
					: findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
				if (isUndef(idxInOld)) { // New element
					createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
				} else {
					vnodeToMove = oldCh[idxInOld];
					if (sameVnode(vnodeToMove, newStartVnode)) {
						patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue);
						oldCh[idxInOld] = undefined;
						canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
					} else {
						// same key but different element. treat as new element
						createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
					}
				}
				newStartVnode = newCh[++newStartIdx];
			}
		}
		if (oldStartIdx > oldEndIdx) {
			refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
			addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
		} else if (newStartIdx > newEndIdx) {
			removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
		}
	}

	function checkDuplicateKeys (children) {
		var seenKeys = {};
		for (var i = 0; i < children.length; i++) {
			var vnode = children[i];
			var key = vnode.key;
			if (isDef(key)) {
				if (seenKeys[key]) {
					warn(
						("Duplicate keys detected: '" + key + "'. This may cause an update error."),
						vnode.context
					);
				} else {
					seenKeys[key] = true;
				}
			}
		}
	}

	function findIdxInOld (node, oldCh, start, end) {
		for (var i = start; i < end; i++) {
			var c = oldCh[i];
			if (isDef(c) && sameVnode(node, c)) { return i }
		}
	}

	function patchVnode (oldVnode, vnode, insertedVnodeQueue, removeOnly) {
		if (oldVnode === vnode) {
			return
		}

		var elm = vnode.elm = oldVnode.elm;

		if (isTrue(oldVnode.isAsyncPlaceholder)) {
			if (isDef(vnode.asyncFactory.resolved)) {
				hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
			} else {
				vnode.isAsyncPlaceholder = true;
			}
			return
		}

		// reuse element for static trees.
		// note we only do this if the vnode is cloned -
		// if the new node is not cloned it means the render functions have been
		// reset by the hot-reload-api and we need to do a proper re-render.
		if (isTrue(vnode.isStatic) &&
			isTrue(oldVnode.isStatic) &&
			vnode.key === oldVnode.key &&
			(isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
		) {
			vnode.componentInstance = oldVnode.componentInstance;
			return
		}

		var i;
		var data = vnode.data;
		if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
			i(oldVnode, vnode);
		}

		var oldCh = oldVnode.children;
		var ch = vnode.children;
		if (isDef(data) && isPatchable(vnode)) {
			for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
			if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
		}
		if (isUndef(vnode.text)) {
			if (isDef(oldCh) && isDef(ch)) {
				if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
			} else if (isDef(ch)) {
				if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
				addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
			} else if (isDef(oldCh)) {
				removeVnodes(elm, oldCh, 0, oldCh.length - 1);
			} else if (isDef(oldVnode.text)) {
				nodeOps.setTextContent(elm, '');
			}
		} else if (oldVnode.text !== vnode.text) {
			nodeOps.setTextContent(elm, vnode.text);
		}
		if (isDef(data)) {
			if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
		}
	}

	function invokeInsertHook (vnode, queue, initial) {
		// delay insert hooks for component root nodes, invoke them after the
		// element is really inserted
		if (isTrue(initial) && isDef(vnode.parent)) {
			vnode.parent.data.pendingInsert = queue;
		} else {
			for (var i = 0; i < queue.length; ++i) {
				queue[i].data.hook.insert(queue[i]);
			}
		}
	}

	var hydrationBailed = false;
	// list of modules that can skip create hook during hydration because they
	// are already rendered on the client or has no need for initialization
	// Note: style is excluded because it relies on initial clone for future
	// deep updates (#7063).
	var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');

	// Note: this is a browser-only function so we can assume elms are DOM nodes.
	function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {
		var i;
		var tag = vnode.tag;
		var data = vnode.data;
		var children = vnode.children;
		inVPre = inVPre || (data && data.pre);
		vnode.elm = elm;

		if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
			vnode.isAsyncPlaceholder = true;
			return true
		}
		// assert node match
		{
			if (!assertNodeMatch(elm, vnode, inVPre)) {
				return false
			}
		}
		if (isDef(data)) {
			if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
			if (isDef(i = vnode.componentInstance)) {
				// child component. it should have hydrated its own tree.
				initComponent(vnode, insertedVnodeQueue);
				return true
			}
		}
		if (isDef(tag)) {
			if (isDef(children)) {
				// empty element, allow client to pick up and populate children
				if (!elm.hasChildNodes()) {
					createChildren(vnode, children, insertedVnodeQueue);
				} else {
					// v-html and domProps: innerHTML
					if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
						if (i !== elm.innerHTML) {
							/* istanbul ignore if */
							if ("development" !== 'production' &&
								typeof console !== 'undefined' &&
								!hydrationBailed
							) {
								hydrationBailed = true;
								console.warn('Parent: ', elm);
								console.warn('server innerHTML: ', i);
								console.warn('client innerHTML: ', elm.innerHTML);
							}
							return false
						}
					} else {
						// iterate and compare children lists
						var childrenMatch = true;
						var childNode = elm.firstChild;
						for (var i$1 = 0; i$1 < children.length; i$1++) {
							if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
								childrenMatch = false;
								break
							}
							childNode = childNode.nextSibling;
						}
						// if childNode is not null, it means the actual childNodes list is
						// longer than the virtual children list.
						if (!childrenMatch || childNode) {
							/* istanbul ignore if */
							if ("development" !== 'production' &&
								typeof console !== 'undefined' &&
								!hydrationBailed
							) {
								hydrationBailed = true;
								console.warn('Parent: ', elm);
								console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
							}
							return false
						}
					}
				}
			}
			if (isDef(data)) {
				var fullInvoke = false;
				for (var key in data) {
					if (!isRenderedModule(key)) {
						fullInvoke = true;
						invokeCreateHooks(vnode, insertedVnodeQueue);
						break
					}
				}
				if (!fullInvoke && data['class']) {
					// ensure collecting deps for deep class bindings for future updates
					traverse(data['class']);
				}
			}
		} else if (elm.data !== vnode.text) {
			elm.data = vnode.text;
		}
		return true
	}

	function assertNodeMatch (node, vnode, inVPre) {
		if (isDef(vnode.tag)) {
			return vnode.tag.indexOf('vue-component') === 0 || (
				!isUnknownElement$$1(vnode, inVPre) &&
				vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
			)
		} else {
			return node.nodeType === (vnode.isComment ? 8 : 3)
		}
	}

	return function patch (oldVnode, vnode, hydrating, removeOnly, parentElm, refElm) {
		if (isUndef(vnode)) {
			if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }
			return
		}

		var isInitialPatch = false;
		var insertedVnodeQueue = [];

		if (isUndef(oldVnode)) {
			// empty mount (likely as component), create new root element
			isInitialPatch = true;
			createElm(vnode, insertedVnodeQueue, parentElm, refElm);
		} else {
			var isRealElement = isDef(oldVnode.nodeType);
			if (!isRealElement && sameVnode(oldVnode, vnode)) {
				// patch existing root node
				patchVnode(oldVnode, vnode, insertedVnodeQueue, removeOnly);
			} else {
				if (isRealElement) {
					// mounting to a real element
					// check if this is server-rendered content and if we can perform
					// a successful hydration.
					if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
						oldVnode.removeAttribute(SSR_ATTR);
						hydrating = true;
					}
					if (isTrue(hydrating)) {
						if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
							invokeInsertHook(vnode, insertedVnodeQueue, true);
							return oldVnode
						} else {
							warn(
								'The client-side rendered virtual DOM tree is not matching ' +
								'server-rendered content. This is likely caused by incorrect ' +
								'HTML markup, for example nesting block-level elements inside ' +
								'<p>, or missing <tbody>. Bailing hydration and performing ' +
								'full client-side render.'
							);
						}
					}
					// either not server-rendered, or hydration failed.
					// create an empty node and replace it
					oldVnode = emptyNodeAt(oldVnode);
				}

				// replacing existing element
				var oldElm = oldVnode.elm;
				var parentElm$1 = nodeOps.parentNode(oldElm);

				// create new node
				createElm(
					vnode,
					insertedVnodeQueue,
					// extremely rare edge case: do not insert if old element is in a
					// leaving transition. Only happens when combining transition +
					// keep-alive + HOCs. (#4590)
					oldElm._leaveCb ? null : parentElm$1,
					nodeOps.nextSibling(oldElm)
				);

				// update parent placeholder node element, recursively
				if (isDef(vnode.parent)) {
					var ancestor = vnode.parent;
					var patchable = isPatchable(vnode);
					while (ancestor) {
						for (var i = 0; i < cbs.destroy.length; ++i) {
							cbs.destroy[i](ancestor);
						}
						ancestor.elm = vnode.elm;
						if (patchable) {
							for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
								cbs.create[i$1](emptyNode, ancestor);
							}
							// #6513
							// invoke insert hooks that may have been merged by create hooks.
							// e.g. for directives that uses the "inserted" hook.
							var insert = ancestor.data.hook.insert;
							if (insert.merged) {
								// start at index 1 to avoid re-invoking component mounted hook
								for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
									insert.fns[i$2]();
								}
							}
						} else {
							registerRef(ancestor);
						}
						ancestor = ancestor.parent;
					}
				}

				// destroy old node
				if (isDef(parentElm$1)) {
					removeVnodes(parentElm$1, [oldVnode], 0, 0);
				} else if (isDef(oldVnode.tag)) {
					invokeDestroyHook(oldVnode);
				}
			}
		}

		invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
		return vnode.elm
	}
}

/*  */

var directives = {
	create: updateDirectives,
	update: updateDirectives,
	destroy: function unbindDirectives (vnode) {
		updateDirectives(vnode, emptyNode);
	}
}

function updateDirectives (oldVnode, vnode) {
	if (oldVnode.data.directives || vnode.data.directives) {
		_update(oldVnode, vnode);
	}
}

function _update (oldVnode, vnode) {
	var isCreate = oldVnode === emptyNode;
	var isDestroy = vnode === emptyNode;
	var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
	var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);

	var dirsWithInsert = [];
	var dirsWithPostpatch = [];

	var key, oldDir, dir;
	for (key in newDirs) {
		oldDir = oldDirs[key];
		dir = newDirs[key];
		if (!oldDir) {
			// new directive, bind
			callHook$1(dir, 'bind', vnode, oldVnode);
			if (dir.def && dir.def.inserted) {
				dirsWithInsert.push(dir);
			}
		} else {
			// existing directive, update
			dir.oldValue = oldDir.value;
			callHook$1(dir, 'update', vnode, oldVnode);
			if (dir.def && dir.def.componentUpdated) {
				dirsWithPostpatch.push(dir);
			}
		}
	}

	if (dirsWithInsert.length) {
		var callInsert = function () {
			for (var i = 0; i < dirsWithInsert.length; i++) {
				callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
			}
		};
		if (isCreate) {
			mergeVNodeHook(vnode, 'insert', callInsert);
		} else {
			callInsert();
		}
	}

	if (dirsWithPostpatch.length) {
		mergeVNodeHook(vnode, 'postpatch', function () {
			for (var i = 0; i < dirsWithPostpatch.length; i++) {
				callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
			}
		});
	}

	if (!isCreate) {
		for (key in oldDirs) {
			if (!newDirs[key]) {
				// no longer present, unbind
				callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
			}
		}
	}
}

var emptyModifiers = Object.create(null);

function normalizeDirectives$1 (
	dirs,
	vm
) {
	var res = Object.create(null);
	if (!dirs) {
		// $flow-disable-line
		return res
	}
	var i, dir;
	for (i = 0; i < dirs.length; i++) {
		dir = dirs[i];
		if (!dir.modifiers) {
			// $flow-disable-line
			dir.modifiers = emptyModifiers;
		}
		res[getRawDirName(dir)] = dir;
		dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
	}
	// $flow-disable-line
	return res
}

function getRawDirName (dir) {
	return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
}

function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
	var fn = dir.def && dir.def[hook];
	if (fn) {
		try {
			fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
		} catch (e) {
			handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
		}
	}
}

var baseModules = [
	ref,
	directives
]

/*  */

function updateAttrs (oldVnode, vnode) {
	var opts = vnode.componentOptions;
	if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
		return
	}
	if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
		return
	}
	var key, cur, old;
	var elm = vnode.elm;
	var oldAttrs = oldVnode.data.attrs || {};
	var attrs = vnode.data.attrs || {};
	// clone observed objects, as the user probably wants to mutate it
	if (isDef(attrs.__ob__)) {
		attrs = vnode.data.attrs = extend({}, attrs);
	}

	for (key in attrs) {
		cur = attrs[key];
		old = oldAttrs[key];
		if (old !== cur) {
			setAttr(elm, key, cur);
		}
	}
	// #4391: in IE9, setting type can reset value for input[type=radio]
	// #6666: IE/Edge forces progress value down to 1 before setting a max
	/* istanbul ignore if */
	if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
		setAttr(elm, 'value', attrs.value);
	}
	for (key in oldAttrs) {
		if (isUndef(attrs[key])) {
			if (isXlink(key)) {
				elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
			} else if (!isEnumeratedAttr(key)) {
				elm.removeAttribute(key);
			}
		}
	}
}

function setAttr (el, key, value) {
	if (el.tagName.indexOf('-') > -1) {
		baseSetAttr(el, key, value);
	} else if (isBooleanAttr(key)) {
		// set attribute for blank value
		// e.g. <option disabled>Select one</option>
		if (isFalsyAttrValue(value)) {
			el.removeAttribute(key);
		} else {
			// technically allowfullscreen is a boolean attribute for <iframe>,
			// but Flash expects a value of "true" when used on <embed> tag
			value = key === 'allowfullscreen' && el.tagName === 'EMBED'
				? 'true'
				: key;
			el.setAttribute(key, value);
		}
	} else if (isEnumeratedAttr(key)) {
		el.setAttribute(key, isFalsyAttrValue(value) || value === 'false' ? 'false' : 'true');
	} else if (isXlink(key)) {
		if (isFalsyAttrValue(value)) {
			el.removeAttributeNS(xlinkNS, getXlinkProp(key));
		} else {
			el.setAttributeNS(xlinkNS, key, value);
		}
	} else {
		baseSetAttr(el, key, value);
	}
}

function baseSetAttr (el, key, value) {
	if (isFalsyAttrValue(value)) {
		el.removeAttribute(key);
	} else {
		// #7138: IE10 & 11 fires input event when setting placeholder on
		// <textarea>... block the first input event and remove the blocker
		// immediately.
		/* istanbul ignore if */
		if (
			isIE && !isIE9 &&
			el.tagName === 'TEXTAREA' &&
			key === 'placeholder' && !el.__ieph
		) {
			var blocker = function (e) {
				e.stopImmediatePropagation();
				el.removeEventListener('input', blocker);
			};
			el.addEventListener('input', blocker);
			// $flow-disable-line
			el.__ieph = true; /* IE placeholder patched */
		}
		el.setAttribute(key, value);
	}
}

var attrs = {
	create: updateAttrs,
	update: updateAttrs
}

/*  */

function updateClass (oldVnode, vnode) {
	var el = vnode.elm;
	var data = vnode.data;
	var oldData = oldVnode.data;
	if (
		isUndef(data.staticClass) &&
		isUndef(data.class) && (
			isUndef(oldData) || (
				isUndef(oldData.staticClass) &&
				isUndef(oldData.class)
			)
		)
	) {
		return
	}

	var cls = genClassForVnode(vnode);

	// handle transition classes
	var transitionClass = el._transitionClasses;
	if (isDef(transitionClass)) {
		cls = concat(cls, stringifyClass(transitionClass));
	}

	// set the class
	if (cls !== el._prevClass) {
		el.setAttribute('class', cls);
		el._prevClass = cls;
	}
}

var klass = {
	create: updateClass,
	update: updateClass
}

/*  */

var validDivisionCharRE = /[\w).+\-_$\]]/;

function parseFilters (exp) {
	var inSingle = false;
	var inDouble = false;
	var inTemplateString = false;
	var inRegex = false;
	var curly = 0;
	var square = 0;
	var paren = 0;
	var lastFilterIndex = 0;
	var c, prev, i, expression, filters;

	for (i = 0; i < exp.length; i++) {
		prev = c;
		c = exp.charCodeAt(i);
		if (inSingle) {
			if (c === 0x27 && prev !== 0x5C) { inSingle = false; }
		} else if (inDouble) {
			if (c === 0x22 && prev !== 0x5C) { inDouble = false; }
		} else if (inTemplateString) {
			if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; }
		} else if (inRegex) {
			if (c === 0x2f && prev !== 0x5C) { inRegex = false; }
		} else if (
			c === 0x7C && // pipe
			exp.charCodeAt(i + 1) !== 0x7C &&
			exp.charCodeAt(i - 1) !== 0x7C &&
			!curly && !square && !paren
		) {
			if (expression === undefined) {
				// first filter, end of expression
				lastFilterIndex = i + 1;
				expression = exp.slice(0, i).trim();
			} else {
				pushFilter();
			}
		} else {
			switch (c) {
				case 0x22: inDouble = true; break         // "
				case 0x27: inSingle = true; break         // '
				case 0x60: inTemplateString = true; break // `
				case 0x28: paren++; break                 // (
				case 0x29: paren--; break                 // )
				case 0x5B: square++; break                // [
				case 0x5D: square--; break                // ]
				case 0x7B: curly++; break                 // {
				case 0x7D: curly--; break                 // }
			}
			if (c === 0x2f) { // /
				var j = i - 1;
				var p = (void 0);
				// find first non-whitespace prev char
				for (; j >= 0; j--) {
					p = exp.charAt(j);
					if (p !== ' ') { break }
				}
				if (!p || !validDivisionCharRE.test(p)) {
					inRegex = true;
				}
			}
		}
	}

	if (expression === undefined) {
		expression = exp.slice(0, i).trim();
	} else if (lastFilterIndex !== 0) {
		pushFilter();
	}

	function pushFilter () {
		(filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
		lastFilterIndex = i + 1;
	}

	if (filters) {
		for (i = 0; i < filters.length; i++) {
			expression = wrapFilter(expression, filters[i]);
		}
	}

	return expression
}

function wrapFilter (exp, filter) {
	var i = filter.indexOf('(');
	if (i < 0) {
		// _f: resolveFilter
		return ("_f(\"" + filter + "\")(" + exp + ")")
	} else {
		var name = filter.slice(0, i);
		var args = filter.slice(i + 1);
		return ("_f(\"" + name + "\")(" + exp + (args !== ')' ? ',' + args : args))
	}
}

/*  */

function baseWarn (msg) {
	console.error(("[Vue compiler]: " + msg));
}

function pluckModuleFunction (
	modules,
	key
) {
	return modules
		? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; })
		: []
}

function addProp (el, name, value) {
	(el.props || (el.props = [])).push({ name: name, value: value });
	el.plain = false;
}

function addAttr (el, name, value) {
	(el.attrs || (el.attrs = [])).push({ name: name, value: value });
	el.plain = false;
}

// add a raw attr (use this in preTransforms)
function addRawAttr (el, name, value) {
	el.attrsMap[name] = value;
	el.attrsList.push({ name: name, value: value });
}

function addDirective (
	el,
	name,
	rawName,
	value,
	arg,
	modifiers
) {
	(el.directives || (el.directives = [])).push({ name: name, rawName: rawName, value: value, arg: arg, modifiers: modifiers });
	el.plain = false;
}

function addHandler (
	el,
	name,
	value,
	modifiers,
	important,
	warn
) {
	modifiers = modifiers || emptyObject;
	// warn prevent and passive modifier
	/* istanbul ignore if */
	if (
		"development" !== 'production' && warn &&
		modifiers.prevent && modifiers.passive
	) {
		warn(
			'passive and prevent can\'t be used together. ' +
			'Passive handler can\'t prevent default event.'
		);
	}

	// check capture modifier
	if (modifiers.capture) {
		delete modifiers.capture;
		name = '!' + name; // mark the event as captured
	}
	if (modifiers.once) {
		delete modifiers.once;
		name = '~' + name; // mark the event as once
	}
	/* istanbul ignore if */
	if (modifiers.passive) {
		delete modifiers.passive;
		name = '&' + name; // mark the event as passive
	}

	// normalize click.right and click.middle since they don't actually fire
	// this is technically browser-specific, but at least for now browsers are
	// the only target envs that have right/middle clicks.
	if (name === 'click') {
		if (modifiers.right) {
			name = 'contextmenu';
			delete modifiers.right;
		} else if (modifiers.middle) {
			name = 'mouseup';
		}
	}

	var events;
	if (modifiers.native) {
		delete modifiers.native;
		events = el.nativeEvents || (el.nativeEvents = {});
	} else {
		events = el.events || (el.events = {});
	}

	var newHandler = {
		value: value.trim()
	};
	if (modifiers !== emptyObject) {
		newHandler.modifiers = modifiers;
	}

	var handlers = events[name];
	/* istanbul ignore if */
	if (Array.isArray(handlers)) {
		important ? handlers.unshift(newHandler) : handlers.push(newHandler);
	} else if (handlers) {
		events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
	} else {
		events[name] = newHandler;
	}

	el.plain = false;
}

function getBindingAttr (
	el,
	name,
	getStatic
) {
	var dynamicValue =
		getAndRemoveAttr(el, ':' + name) ||
		getAndRemoveAttr(el, 'v-bind:' + name);
	if (dynamicValue != null) {
		return parseFilters(dynamicValue)
	} else if (getStatic !== false) {
		var staticValue = getAndRemoveAttr(el, name);
		if (staticValue != null) {
			return JSON.stringify(staticValue)
		}
	}
}

// note: this only removes the attr from the Array (attrsList) so that it
// doesn't get processed by processAttrs.
// By default it does NOT remove it from the map (attrsMap) because the map is
// needed during codegen.
function getAndRemoveAttr (
	el,
	name,
	removeFromMap
) {
	var val;
	if ((val = el.attrsMap[name]) != null) {
		var list = el.attrsList;
		for (var i = 0, l = list.length; i < l; i++) {
			if (list[i].name === name) {
				list.splice(i, 1);
				break
			}
		}
	}
	if (removeFromMap) {
		delete el.attrsMap[name];
	}
	return val
}

/*  */

/**
 * Cross-platform code generation for component v-model
 */
function genComponentModel (
	el,
	value,
	modifiers
) {
	var ref = modifiers || {};
	var number = ref.number;
	var trim = ref.trim;

	var baseValueExpression = '$$v';
	var valueExpression = baseValueExpression;
	if (trim) {
		valueExpression =
			"(typeof " + baseValueExpression + " === 'string'" +
			"? " + baseValueExpression + ".trim()" +
			": " + baseValueExpression + ")";
	}
	if (number) {
		valueExpression = "_n(" + valueExpression + ")";
	}
	var assignment = genAssignmentCode(value, valueExpression);

	el.model = {
		value: ("(" + value + ")"),
		expression: ("\"" + value + "\""),
		callback: ("function (" + baseValueExpression + ") {" + assignment + "}")
	};
}

/**
 * Cross-platform codegen helper for generating v-model value assignment code.
 */
function genAssignmentCode (
	value,
	assignment
) {
	var res = parseModel(value);
	if (res.key === null) {
		return (value + "=" + assignment)
	} else {
		return ("$set(" + (res.exp) + ", " + (res.key) + ", " + assignment + ")")
	}
}

/**
 * Parse a v-model expression into a base path and a final key segment.
 * Handles both dot-path and possible square brackets.
 *
 * Possible cases:
 *
 * - test
 * - test[key]
 * - test[test1[key]]
 * - test["a"][key]
 * - xxx.test[a[a].test1[key]]
 * - test.xxx.a["asa"][test1[key]]
 *
 */

var len;
var str;
var chr;
var index$1;
var expressionPos;
var expressionEndPos;



function parseModel (val) {
	// Fix https://github.com/vuejs/vue/pull/7730
	// allow v-model="obj.val " (trailing whitespace)
	val = val.trim();
	len = val.length;

	if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
		index$1 = val.lastIndexOf('.');
		if (index$1 > -1) {
			return {
				exp: val.slice(0, index$1),
				key: '"' + val.slice(index$1 + 1) + '"'
			}
		} else {
			return {
				exp: val,
				key: null
			}
		}
	}

	str = val;
	index$1 = expressionPos = expressionEndPos = 0;

	while (!eof()) {
		chr = next();
		/* istanbul ignore if */
		if (isStringStart(chr)) {
			parseString(chr);
		} else if (chr === 0x5B) {
			parseBracket(chr);
		}
	}

	return {
		exp: val.slice(0, expressionPos),
		key: val.slice(expressionPos + 1, expressionEndPos)
	}
}

function next () {
	return str.charCodeAt(++index$1)
}

function eof () {
	return index$1 >= len
}

function isStringStart (chr) {
	return chr === 0x22 || chr === 0x27
}

function parseBracket (chr) {
	var inBracket = 1;
	expressionPos = index$1;
	while (!eof()) {
		chr = next();
		if (isStringStart(chr)) {
			parseString(chr);
			continue
		}
		if (chr === 0x5B) { inBracket++; }
		if (chr === 0x5D) { inBracket--; }
		if (inBracket === 0) {
			expressionEndPos = index$1;
			break
		}
	}
}

function parseString (chr) {
	var stringQuote = chr;
	while (!eof()) {
		chr = next();
		if (chr === stringQuote) {
			break
		}
	}
}

/*  */

var warn$1;

// in some cases, the event used has to be determined at runtime
// so we used some reserved tokens during compile.
var RANGE_TOKEN = '__r';
var CHECKBOX_RADIO_TOKEN = '__c';

function model (
	el,
	dir,
	_warn
) {
	warn$1 = _warn;
	var value = dir.value;
	var modifiers = dir.modifiers;
	var tag = el.tag;
	var type = el.attrsMap.type;

	{
		// inputs with type="file" are read only and setting the input's
		// value will throw an error.
		if (tag === 'input' && type === 'file') {
			warn$1(
				"<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
				"File inputs are read only. Use a v-on:change listener instead."
			);
		}
	}

	if (el.component) {
		genComponentModel(el, value, modifiers);
		// component v-model doesn't need extra runtime
		return false
	} else if (tag === 'select') {
		genSelect(el, value, modifiers);
	} else if (tag === 'input' && type === 'checkbox') {
		genCheckboxModel(el, value, modifiers);
	} else if (tag === 'input' && type === 'radio') {
		genRadioModel(el, value, modifiers);
	} else if (tag === 'input' || tag === 'textarea') {
		genDefaultModel(el, value, modifiers);
	} else if (!config.isReservedTag(tag)) {
		genComponentModel(el, value, modifiers);
		// component v-model doesn't need extra runtime
		return false
	} else {
		warn$1(
			"<" + (el.tag) + " v-model=\"" + value + "\">: " +
			"v-model is not supported on this element type. " +
			'If you are working with contenteditable, it\'s recommended to ' +
			'wrap a library dedicated for that purpose inside a custom component.'
		);
	}

	// ensure runtime directive metadata
	return true
}

function genCheckboxModel (
	el,
	value,
	modifiers
) {
	var number = modifiers && modifiers.number;
	var valueBinding = getBindingAttr(el, 'value') || 'null';
	var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
	var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
	addProp(el, 'checked',
		"Array.isArray(" + value + ")" +
		"?_i(" + value + "," + valueBinding + ")>-1" + (
			trueValueBinding === 'true'
				? (":(" + value + ")")
				: (":_q(" + value + "," + trueValueBinding + ")")
		)
	);
	addHandler(el, 'change',
		"var $$a=" + value + "," +
				'$$el=$event.target,' +
				"$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
		'if(Array.isArray($$a)){' +
			"var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
					'$$i=_i($$a,$$v);' +
			"if($$el.checked){$$i<0&&(" + (genAssignmentCode(value, '$$a.concat([$$v])')) + ")}" +
			"else{$$i>-1&&(" + (genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')) + ")}" +
		"}else{" + (genAssignmentCode(value, '$$c')) + "}",
		null, true
	);
}

function genRadioModel (
	el,
	value,
	modifiers
) {
	var number = modifiers && modifiers.number;
	var valueBinding = getBindingAttr(el, 'value') || 'null';
	valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
	addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
	addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
}

function genSelect (
	el,
	value,
	modifiers
) {
	var number = modifiers && modifiers.number;
	var selectedVal = "Array.prototype.filter" +
		".call($event.target.options,function(o){return o.selected})" +
		".map(function(o){var val = \"_value\" in o ? o._value : o.value;" +
		"return " + (number ? '_n(val)' : 'val') + "})";

	var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
	var code = "var $$selectedVal = " + selectedVal + ";";
	code = code + " " + (genAssignmentCode(value, assignment));
	addHandler(el, 'change', code, null, true);
}

function genDefaultModel (
	el,
	value,
	modifiers
) {
	var type = el.attrsMap.type;

	// warn if v-bind:value conflicts with v-model
	// except for inputs with v-bind:type
	{
		var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value'];
		var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
		if (value$1 && !typeBinding) {
			var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value';
			warn$1(
				binding + "=\"" + value$1 + "\" conflicts with v-model on the same element " +
				'because the latter already expands to a value binding internally'
			);
		}
	}

	var ref = modifiers || {};
	var lazy = ref.lazy;
	var number = ref.number;
	var trim = ref.trim;
	var needCompositionGuard = !lazy && type !== 'range';
	var event = lazy
		? 'change'
		: type === 'range'
			? RANGE_TOKEN
			: 'input';

	var valueExpression = '$event.target.value';
	if (trim) {
		valueExpression = "$event.target.value.trim()";
	}
	if (number) {
		valueExpression = "_n(" + valueExpression + ")";
	}

	var code = genAssignmentCode(value, valueExpression);
	if (needCompositionGuard) {
		code = "if($event.target.composing)return;" + code;
	}

	addProp(el, 'value', ("(" + value + ")"));
	addHandler(el, event, code, null, true);
	if (trim || number) {
		addHandler(el, 'blur', '$forceUpdate()');
	}
}

/*  */

// normalize v-model event tokens that can only be determined at runtime.
// it's important to place the event as the first in the array because
// the whole point is ensuring the v-model callback gets called before
// user-attached handlers.
function normalizeEvents (on) {
	/* istanbul ignore if */
	if (isDef(on[RANGE_TOKEN])) {
		// IE input[type=range] only supports `change` event
		var event = isIE ? 'change' : 'input';
		on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
		delete on[RANGE_TOKEN];
	}
	// This was originally intended to fix #4521 but no longer necessary
	// after 2.5. Keeping it for backwards compat with generated code from < 2.4
	/* istanbul ignore if */
	if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
		on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
		delete on[CHECKBOX_RADIO_TOKEN];
	}
}

var target$1;

function createOnceHandler (handler, event, capture) {
	var _target = target$1; // save current target element in closure
	return function onceHandler () {
		var res = handler.apply(null, arguments);
		if (res !== null) {
			remove$2(event, onceHandler, capture, _target);
		}
	}
}

function add$1 (
	event,
	handler,
	once$$1,
	capture,
	passive
) {
	handler = withMacroTask(handler);
	if (once$$1) { handler = createOnceHandler(handler, event, capture); }
	target$1.addEventListener(
		event,
		handler,
		supportsPassive
			? { capture: capture, passive: passive }
			: capture
	);
}

function remove$2 (
	event,
	handler,
	capture,
	_target
) {
	(_target || target$1).removeEventListener(
		event,
		handler._withTask || handler,
		capture
	);
}

function updateDOMListeners (oldVnode, vnode) {
	if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
		return
	}
	var on = vnode.data.on || {};
	var oldOn = oldVnode.data.on || {};
	target$1 = vnode.elm;
	normalizeEvents(on);
	updateListeners(on, oldOn, add$1, remove$2, vnode.context);
	target$1 = undefined;
}

var events = {
	create: updateDOMListeners,
	update: updateDOMListeners
}

/*  */

function updateDOMProps (oldVnode, vnode) {
	if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
		return
	}
	var key, cur;
	var elm = vnode.elm;
	var oldProps = oldVnode.data.domProps || {};
	var props = vnode.data.domProps || {};
	// clone observed objects, as the user probably wants to mutate it
	if (isDef(props.__ob__)) {
		props = vnode.data.domProps = extend({}, props);
	}

	for (key in oldProps) {
		if (isUndef(props[key])) {
			elm[key] = '';
		}
	}
	for (key in props) {
		cur = props[key];
		// ignore children if the node has textContent or innerHTML,
		// as these will throw away existing DOM nodes and cause removal errors
		// on subsequent patches (#3360)
		if (key === 'textContent' || key === 'innerHTML') {
			if (vnode.children) { vnode.children.length = 0; }
			if (cur === oldProps[key]) { continue }
			// #6601 work around Chrome version <= 55 bug where single textNode
			// replaced by innerHTML/textContent retains its parentNode property
			if (elm.childNodes.length === 1) {
				elm.removeChild(elm.childNodes[0]);
			}
		}

		if (key === 'value') {
			// store value as _value as well since
			// non-string values will be stringified
			elm._value = cur;
			// avoid resetting cursor position when value is the same
			var strCur = isUndef(cur) ? '' : String(cur);
			if (shouldUpdateValue(elm, strCur)) {
				elm.value = strCur;
			}
		} else {
			elm[key] = cur;
		}
	}
}

// check platforms/web/util/attrs.js acceptValue


function shouldUpdateValue (elm, checkVal) {
	return (!elm.composing && (
		elm.tagName === 'OPTION' ||
		isNotInFocusAndDirty(elm, checkVal) ||
		isDirtyWithModifiers(elm, checkVal)
	))
}

function isNotInFocusAndDirty (elm, checkVal) {
	// return true when textbox (.number and .trim) loses focus and its value is
	// not equal to the updated value
	var notInFocus = true;
	// #6157
	// work around IE bug when accessing document.activeElement in an iframe
	try { notInFocus = document.activeElement !== elm; } catch (e) {}
	return notInFocus && elm.value !== checkVal
}

function isDirtyWithModifiers (elm, newVal) {
	var value = elm.value;
	var modifiers = elm._vModifiers; // injected by v-model runtime
	if (isDef(modifiers)) {
		if (modifiers.lazy) {
			// inputs with lazy should only be updated when not in focus
			return false
		}
		if (modifiers.number) {
			return toNumber(value) !== toNumber(newVal)
		}
		if (modifiers.trim) {
			return value.trim() !== newVal.trim()
		}
	}
	return value !== newVal
}

var domProps = {
	create: updateDOMProps,
	update: updateDOMProps
}

/*  */

var parseStyleText = cached(function (cssText) {
	var res = {};
	var listDelimiter = /;(?![^(]*\))/g;
	var propertyDelimiter = /:(.+)/;
	cssText.split(listDelimiter).forEach(function (item) {
		if (item) {
			var tmp = item.split(propertyDelimiter);
			tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
		}
	});
	return res
});

// merge static and dynamic style data on the same vnode
function normalizeStyleData (data) {
	var style = normalizeStyleBinding(data.style);
	// static style is pre-processed into an object during compilation
	// and is always a fresh object, so it's safe to merge into it
	return data.staticStyle
		? extend(data.staticStyle, style)
		: style
}

// normalize possible array / string values into Object
function normalizeStyleBinding (bindingStyle) {
	if (Array.isArray(bindingStyle)) {
		return toObject(bindingStyle)
	}
	if (typeof bindingStyle === 'string') {
		return parseStyleText(bindingStyle)
	}
	return bindingStyle
}

/**
 * parent component style should be after child's
 * so that parent component's style could override it
 */
function getStyle (vnode, checkChild) {
	var res = {};
	var styleData;

	if (checkChild) {
		var childNode = vnode;
		while (childNode.componentInstance) {
			childNode = childNode.componentInstance._vnode;
			if (
				childNode && childNode.data &&
				(styleData = normalizeStyleData(childNode.data))
			) {
				extend(res, styleData);
			}
		}
	}

	if ((styleData = normalizeStyleData(vnode.data))) {
		extend(res, styleData);
	}

	var parentNode = vnode;
	while ((parentNode = parentNode.parent)) {
		if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
			extend(res, styleData);
		}
	}
	return res
}

/*  */

var cssVarRE = /^--/;
var importantRE = /\s*!important$/;
var setProp = function (el, name, val) {
	/* istanbul ignore if */
	if (cssVarRE.test(name)) {
		el.style.setProperty(name, val);
	} else if (importantRE.test(val)) {
		el.style.setProperty(name, val.replace(importantRE, ''), 'important');
	} else {
		var normalizedName = normalize(name);
		if (Array.isArray(val)) {
			// Support values array created by autoprefixer, e.g.
			// {display: ["-webkit-box", "-ms-flexbox", "flex"]}
			// Set them one by one, and the browser will only set those it can recognize
			for (var i = 0, len = val.length; i < len; i++) {
				el.style[normalizedName] = val[i];
			}
		} else {
			el.style[normalizedName] = val;
		}
	}
};

var vendorNames = ['Webkit', 'Moz', 'ms'];

var emptyStyle;
var normalize = cached(function (prop) {
	emptyStyle = emptyStyle || document.createElement('div').style;
	prop = camelize(prop);
	if (prop !== 'filter' && (prop in emptyStyle)) {
		return prop
	}
	var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
	for (var i = 0; i < vendorNames.length; i++) {
		var name = vendorNames[i] + capName;
		if (name in emptyStyle) {
			return name
		}
	}
});

function updateStyle (oldVnode, vnode) {
	var data = vnode.data;
	var oldData = oldVnode.data;

	if (isUndef(data.staticStyle) && isUndef(data.style) &&
		isUndef(oldData.staticStyle) && isUndef(oldData.style)
	) {
		return
	}

	var cur, name;
	var el = vnode.elm;
	var oldStaticStyle = oldData.staticStyle;
	var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};

	// if static style exists, stylebinding already merged into it when doing normalizeStyleData
	var oldStyle = oldStaticStyle || oldStyleBinding;

	var style = normalizeStyleBinding(vnode.data.style) || {};

	// store normalized style under a different key for next diff
	// make sure to clone it if it's reactive, since the user likely wants
	// to mutate it.
	vnode.data.normalizedStyle = isDef(style.__ob__)
		? extend({}, style)
		: style;

	var newStyle = getStyle(vnode, true);

	for (name in oldStyle) {
		if (isUndef(newStyle[name])) {
			setProp(el, name, '');
		}
	}
	for (name in newStyle) {
		cur = newStyle[name];
		if (cur !== oldStyle[name]) {
			// ie9 setting to null has no effect, must use empty string
			setProp(el, name, cur == null ? '' : cur);
		}
	}
}

var style = {
	create: updateStyle,
	update: updateStyle
}

/*  */

/**
 * Add class with compatibility for SVG since classList is not supported on
 * SVG elements in IE
 */
function addClass (el, cls) {
	/* istanbul ignore if */
	if (!cls || !(cls = cls.trim())) {
		return
	}

	/* istanbul ignore else */
	if (el.classList) {
		if (cls.indexOf(' ') > -1) {
			cls.split(/\s+/).forEach(function (c) { return el.classList.add(c); });
		} else {
			el.classList.add(cls);
		}
	} else {
		var cur = " " + (el.getAttribute('class') || '') + " ";
		if (cur.indexOf(' ' + cls + ' ') < 0) {
			el.setAttribute('class', (cur + cls).trim());
		}
	}
}

/**
 * Remove class with compatibility for SVG since classList is not supported on
 * SVG elements in IE
 */
function removeClass (el, cls) {
	/* istanbul ignore if */
	if (!cls || !(cls = cls.trim())) {
		return
	}

	/* istanbul ignore else */
	if (el.classList) {
		if (cls.indexOf(' ') > -1) {
			cls.split(/\s+/).forEach(function (c) { return el.classList.remove(c); });
		} else {
			el.classList.remove(cls);
		}
		if (!el.classList.length) {
			el.removeAttribute('class');
		}
	} else {
		var cur = " " + (el.getAttribute('class') || '') + " ";
		var tar = ' ' + cls + ' ';
		while (cur.indexOf(tar) >= 0) {
			cur = cur.replace(tar, ' ');
		}
		cur = cur.trim();
		if (cur) {
			el.setAttribute('class', cur);
		} else {
			el.removeAttribute('class');
		}
	}
}

/*  */

function resolveTransition (def) {
	if (!def) {
		return
	}
	/* istanbul ignore else */
	if (typeof def === 'object') {
		var res = {};
		if (def.css !== false) {
			extend(res, autoCssTransition(def.name || 'v'));
		}
		extend(res, def);
		return res
	} else if (typeof def === 'string') {
		return autoCssTransition(def)
	}
}

var autoCssTransition = cached(function (name) {
	return {
		enterClass: (name + "-enter"),
		enterToClass: (name + "-enter-to"),
		enterActiveClass: (name + "-enter-active"),
		leaveClass: (name + "-leave"),
		leaveToClass: (name + "-leave-to"),
		leaveActiveClass: (name + "-leave-active")
	}
});

var hasTransition = inBrowser && !isIE9;
var TRANSITION = 'transition';
var ANIMATION = 'animation';

// Transition property/event sniffing
var transitionProp = 'transition';
var transitionEndEvent = 'transitionend';
var animationProp = 'animation';
var animationEndEvent = 'animationend';
if (hasTransition) {
	/* istanbul ignore if */
	if (window.ontransitionend === undefined &&
		window.onwebkittransitionend !== undefined
	) {
		transitionProp = 'WebkitTransition';
		transitionEndEvent = 'webkitTransitionEnd';
	}
	if (window.onanimationend === undefined &&
		window.onwebkitanimationend !== undefined
	) {
		animationProp = 'WebkitAnimation';
		animationEndEvent = 'webkitAnimationEnd';
	}
}

// binding to window is necessary to make hot reload work in IE in strict mode
var raf = inBrowser
	? window.requestAnimationFrame
		? window.requestAnimationFrame.bind(window)
		: setTimeout
	: /* istanbul ignore next */ function (fn) { return fn(); };

function nextFrame (fn) {
	raf(function () {
		raf(fn);
	});
}

function addTransitionClass (el, cls) {
	var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
	if (transitionClasses.indexOf(cls) < 0) {
		transitionClasses.push(cls);
		addClass(el, cls);
	}
}

function removeTransitionClass (el, cls) {
	if (el._transitionClasses) {
		remove(el._transitionClasses, cls);
	}
	removeClass(el, cls);
}

function whenTransitionEnds (
	el,
	expectedType,
	cb
) {
	var ref = getTransitionInfo(el, expectedType);
	var type = ref.type;
	var timeout = ref.timeout;
	var propCount = ref.propCount;
	if (!type) { return cb() }
	var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
	var ended = 0;
	var end = function () {
		el.removeEventListener(event, onEnd);
		cb();
	};
	var onEnd = function (e) {
		if (e.target === el) {
			if (++ended >= propCount) {
				end();
			}
		}
	};
	setTimeout(function () {
		if (ended < propCount) {
			end();
		}
	}, timeout + 1);
	el.addEventListener(event, onEnd);
}

var transformRE = /\b(transform|all)(,|$)/;

function getTransitionInfo (el, expectedType) {
	var styles = window.getComputedStyle(el);
	var transitionDelays = styles[transitionProp + 'Delay'].split(', ');
	var transitionDurations = styles[transitionProp + 'Duration'].split(', ');
	var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
	var animationDelays = styles[animationProp + 'Delay'].split(', ');
	var animationDurations = styles[animationProp + 'Duration'].split(', ');
	var animationTimeout = getTimeout(animationDelays, animationDurations);

	var type;
	var timeout = 0;
	var propCount = 0;
	/* istanbul ignore if */
	if (expectedType === TRANSITION) {
		if (transitionTimeout > 0) {
			type = TRANSITION;
			timeout = transitionTimeout;
			propCount = transitionDurations.length;
		}
	} else if (expectedType === ANIMATION) {
		if (animationTimeout > 0) {
			type = ANIMATION;
			timeout = animationTimeout;
			propCount = animationDurations.length;
		}
	} else {
		timeout = Math.max(transitionTimeout, animationTimeout);
		type = timeout > 0
			? transitionTimeout > animationTimeout
				? TRANSITION
				: ANIMATION
			: null;
		propCount = type
			? type === TRANSITION
				? transitionDurations.length
				: animationDurations.length
			: 0;
	}
	var hasTransform =
		type === TRANSITION &&
		transformRE.test(styles[transitionProp + 'Property']);
	return {
		type: type,
		timeout: timeout,
		propCount: propCount,
		hasTransform: hasTransform
	}
}

function getTimeout (delays, durations) {
	/* istanbul ignore next */
	while (delays.length < durations.length) {
		delays = delays.concat(delays);
	}

	return Math.max.apply(null, durations.map(function (d, i) {
		return toMs(d) + toMs(delays[i])
	}))
}

function toMs (s) {
	return Number(s.slice(0, -1)) * 1000
}

/*  */

function enter (vnode, toggleDisplay) {
	var el = vnode.elm;

	// call leave callback now
	if (isDef(el._leaveCb)) {
		el._leaveCb.cancelled = true;
		el._leaveCb();
	}

	var data = resolveTransition(vnode.data.transition);
	if (isUndef(data)) {
		return
	}

	/* istanbul ignore if */
	if (isDef(el._enterCb) || el.nodeType !== 1) {
		return
	}

	var css = data.css;
	var type = data.type;
	var enterClass = data.enterClass;
	var enterToClass = data.enterToClass;
	var enterActiveClass = data.enterActiveClass;
	var appearClass = data.appearClass;
	var appearToClass = data.appearToClass;
	var appearActiveClass = data.appearActiveClass;
	var beforeEnter = data.beforeEnter;
	var enter = data.enter;
	var afterEnter = data.afterEnter;
	var enterCancelled = data.enterCancelled;
	var beforeAppear = data.beforeAppear;
	var appear = data.appear;
	var afterAppear = data.afterAppear;
	var appearCancelled = data.appearCancelled;
	var duration = data.duration;

	// activeInstance will always be the <transition> component managing this
	// transition. One edge case to check is when the <transition> is placed
	// as the root node of a child component. In that case we need to check
	// <transition>'s parent for appear check.
	var context = activeInstance;
	var transitionNode = activeInstance.$vnode;
	while (transitionNode && transitionNode.parent) {
		transitionNode = transitionNode.parent;
		context = transitionNode.context;
	}

	var isAppear = !context._isMounted || !vnode.isRootInsert;

	if (isAppear && !appear && appear !== '') {
		return
	}

	var startClass = isAppear && appearClass
		? appearClass
		: enterClass;
	var activeClass = isAppear && appearActiveClass
		? appearActiveClass
		: enterActiveClass;
	var toClass = isAppear && appearToClass
		? appearToClass
		: enterToClass;

	var beforeEnterHook = isAppear
		? (beforeAppear || beforeEnter)
		: beforeEnter;
	var enterHook = isAppear
		? (typeof appear === 'function' ? appear : enter)
		: enter;
	var afterEnterHook = isAppear
		? (afterAppear || afterEnter)
		: afterEnter;
	var enterCancelledHook = isAppear
		? (appearCancelled || enterCancelled)
		: enterCancelled;

	var explicitEnterDuration = toNumber(
		isObject(duration)
			? duration.enter
			: duration
	);

	if ("development" !== 'production' && explicitEnterDuration != null) {
		checkDuration(explicitEnterDuration, 'enter', vnode);
	}

	var expectsCSS = css !== false && !isIE9;
	var userWantsControl = getHookArgumentsLength(enterHook);

	var cb = el._enterCb = once(function () {
		if (expectsCSS) {
			removeTransitionClass(el, toClass);
			removeTransitionClass(el, activeClass);
		}
		if (cb.cancelled) {
			if (expectsCSS) {
				removeTransitionClass(el, startClass);
			}
			enterCancelledHook && enterCancelledHook(el);
		} else {
			afterEnterHook && afterEnterHook(el);
		}
		el._enterCb = null;
	});

	if (!vnode.data.show) {
		// remove pending leave element on enter by injecting an insert hook
		mergeVNodeHook(vnode, 'insert', function () {
			var parent = el.parentNode;
			var pendingNode = parent && parent._pending && parent._pending[vnode.key];
			if (pendingNode &&
				pendingNode.tag === vnode.tag &&
				pendingNode.elm._leaveCb
			) {
				pendingNode.elm._leaveCb();
			}
			enterHook && enterHook(el, cb);
		});
	}

	// start enter transition
	beforeEnterHook && beforeEnterHook(el);
	if (expectsCSS) {
		addTransitionClass(el, startClass);
		addTransitionClass(el, activeClass);
		nextFrame(function () {
			removeTransitionClass(el, startClass);
			if (!cb.cancelled) {
				addTransitionClass(el, toClass);
				if (!userWantsControl) {
					if (isValidDuration(explicitEnterDuration)) {
						setTimeout(cb, explicitEnterDuration);
					} else {
						whenTransitionEnds(el, type, cb);
					}
				}
			}
		});
	}

	if (vnode.data.show) {
		toggleDisplay && toggleDisplay();
		enterHook && enterHook(el, cb);
	}

	if (!expectsCSS && !userWantsControl) {
		cb();
	}
}

function leave (vnode, rm) {
	var el = vnode.elm;

	// call enter callback now
	if (isDef(el._enterCb)) {
		el._enterCb.cancelled = true;
		el._enterCb();
	}

	var data = resolveTransition(vnode.data.transition);
	if (isUndef(data) || el.nodeType !== 1) {
		return rm()
	}

	/* istanbul ignore if */
	if (isDef(el._leaveCb)) {
		return
	}

	var css = data.css;
	var type = data.type;
	var leaveClass = data.leaveClass;
	var leaveToClass = data.leaveToClass;
	var leaveActiveClass = data.leaveActiveClass;
	var beforeLeave = data.beforeLeave;
	var leave = data.leave;
	var afterLeave = data.afterLeave;
	var leaveCancelled = data.leaveCancelled;
	var delayLeave = data.delayLeave;
	var duration = data.duration;

	var expectsCSS = css !== false && !isIE9;
	var userWantsControl = getHookArgumentsLength(leave);

	var explicitLeaveDuration = toNumber(
		isObject(duration)
			? duration.leave
			: duration
	);

	if ("development" !== 'production' && isDef(explicitLeaveDuration)) {
		checkDuration(explicitLeaveDuration, 'leave', vnode);
	}

	var cb = el._leaveCb = once(function () {
		if (el.parentNode && el.parentNode._pending) {
			el.parentNode._pending[vnode.key] = null;
		}
		if (expectsCSS) {
			removeTransitionClass(el, leaveToClass);
			removeTransitionClass(el, leaveActiveClass);
		}
		if (cb.cancelled) {
			if (expectsCSS) {
				removeTransitionClass(el, leaveClass);
			}
			leaveCancelled && leaveCancelled(el);
		} else {
			rm();
			afterLeave && afterLeave(el);
		}
		el._leaveCb = null;
	});

	if (delayLeave) {
		delayLeave(performLeave);
	} else {
		performLeave();
	}

	function performLeave () {
		// the delayed leave may have already been cancelled
		if (cb.cancelled) {
			return
		}
		// record leaving element
		if (!vnode.data.show) {
			(el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
		}
		beforeLeave && beforeLeave(el);
		if (expectsCSS) {
			addTransitionClass(el, leaveClass);
			addTransitionClass(el, leaveActiveClass);
			nextFrame(function () {
				removeTransitionClass(el, leaveClass);
				if (!cb.cancelled) {
					addTransitionClass(el, leaveToClass);
					if (!userWantsControl) {
						if (isValidDuration(explicitLeaveDuration)) {
							setTimeout(cb, explicitLeaveDuration);
						} else {
							whenTransitionEnds(el, type, cb);
						}
					}
				}
			});
		}
		leave && leave(el, cb);
		if (!expectsCSS && !userWantsControl) {
			cb();
		}
	}
}

// only used in dev mode
function checkDuration (val, name, vnode) {
	if (typeof val !== 'number') {
		warn(
			"<transition> explicit " + name + " duration is not a valid number - " +
			"got " + (JSON.stringify(val)) + ".",
			vnode.context
		);
	} else if (isNaN(val)) {
		warn(
			"<transition> explicit " + name + " duration is NaN - " +
			'the duration expression might be incorrect.',
			vnode.context
		);
	}
}

function isValidDuration (val) {
	return typeof val === 'number' && !isNaN(val)
}

/**
 * Normalize a transition hook's argument length. The hook may be:
 * - a merged hook (invoker) with the original in .fns
 * - a wrapped component method (check ._length)
 * - a plain function (.length)
 */
function getHookArgumentsLength (fn) {
	if (isUndef(fn)) {
		return false
	}
	var invokerFns = fn.fns;
	if (isDef(invokerFns)) {
		// invoker
		return getHookArgumentsLength(
			Array.isArray(invokerFns)
				? invokerFns[0]
				: invokerFns
		)
	} else {
		return (fn._length || fn.length) > 1
	}
}

function _enter (_, vnode) {
	if (vnode.data.show !== true) {
		enter(vnode);
	}
}

var transition = inBrowser ? {
	create: _enter,
	activate: _enter,
	remove: function remove$$1 (vnode, rm) {
		/* istanbul ignore else */
		if (vnode.data.show !== true) {
			leave(vnode, rm);
		} else {
			rm();
		}
	}
} : {}

var platformModules = [
	attrs,
	klass,
	events,
	domProps,
	style,
	transition
]

/*  */

// the directive module should be applied last, after all
// built-in modules have been applied.
var modules = platformModules.concat(baseModules);

var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules });

/**
 * Not type checking this file because flow doesn't like attaching
 * properties to Elements.
 */

/* istanbul ignore if */
if (isIE9) {
	// http://www.matts411.com/post/internet-explorer-9-oninput/
	document.addEventListener('selectionchange', function () {
		var el = document.activeElement;
		if (el && el.vmodel) {
			trigger(el, 'input');
		}
	});
}

var directive = {
	inserted: function inserted (el, binding, vnode, oldVnode) {
		if (vnode.tag === 'select') {
			// #6903
			if (oldVnode.elm && !oldVnode.elm._vOptions) {
				mergeVNodeHook(vnode, 'postpatch', function () {
					directive.componentUpdated(el, binding, vnode);
				});
			} else {
				setSelected(el, binding, vnode.context);
			}
			el._vOptions = [].map.call(el.options, getValue);
		} else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
			el._vModifiers = binding.modifiers;
			if (!binding.modifiers.lazy) {
				el.addEventListener('compositionstart', onCompositionStart);
				el.addEventListener('compositionend', onCompositionEnd);
				// Safari < 10.2 & UIWebView doesn't fire compositionend when
				// switching focus before confirming composition choice
				// this also fixes the issue where some browsers e.g. iOS Chrome
				// fires "change" instead of "input" on autocomplete.
				el.addEventListener('change', onCompositionEnd);
				/* istanbul ignore if */
				if (isIE9) {
					el.vmodel = true;
				}
			}
		}
	},

	componentUpdated: function componentUpdated (el, binding, vnode) {
		if (vnode.tag === 'select') {
			setSelected(el, binding, vnode.context);
			// in case the options rendered by v-for have changed,
			// it's possible that the value is out-of-sync with the rendered options.
			// detect such cases and filter out values that no longer has a matching
			// option in the DOM.
			var prevOptions = el._vOptions;
			var curOptions = el._vOptions = [].map.call(el.options, getValue);
			if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) {
				// trigger change event if
				// no matching option found for at least one value
				var needReset = el.multiple
					? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); })
					: binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
				if (needReset) {
					trigger(el, 'change');
				}
			}
		}
	}
};

function setSelected (el, binding, vm) {
	actuallySetSelected(el, binding, vm);
	/* istanbul ignore if */
	if (isIE || isEdge) {
		setTimeout(function () {
			actuallySetSelected(el, binding, vm);
		}, 0);
	}
}

function actuallySetSelected (el, binding, vm) {
	var value = binding.value;
	var isMultiple = el.multiple;
	if (isMultiple && !Array.isArray(value)) {
		"development" !== 'production' && warn(
			"<select multiple v-model=\"" + (binding.expression) + "\"> " +
			"expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)),
			vm
		);
		return
	}
	var selected, option;
	for (var i = 0, l = el.options.length; i < l; i++) {
		option = el.options[i];
		if (isMultiple) {
			selected = looseIndexOf(value, getValue(option)) > -1;
			if (option.selected !== selected) {
				option.selected = selected;
			}
		} else {
			if (looseEqual(getValue(option), value)) {
				if (el.selectedIndex !== i) {
					el.selectedIndex = i;
				}
				return
			}
		}
	}
	if (!isMultiple) {
		el.selectedIndex = -1;
	}
}

function hasNoMatchingOption (value, options) {
	return options.every(function (o) { return !looseEqual(o, value); })
}

function getValue (option) {
	return '_value' in option
		? option._value
		: option.value
}

function onCompositionStart (e) {
	e.target.composing = true;
}

function onCompositionEnd (e) {
	// prevent triggering an input event for no reason
	if (!e.target.composing) { return }
	e.target.composing = false;
	trigger(e.target, 'input');
}

function trigger (el, type) {
	var e = document.createEvent('HTMLEvents');
	e.initEvent(type, true, true);
	el.dispatchEvent(e);
}

/*  */

// recursively search for possible transition defined inside the component root
function locateNode (vnode) {
	return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
		? locateNode(vnode.componentInstance._vnode)
		: vnode
}

var show = {
	bind: function bind (el, ref, vnode) {
		var value = ref.value;

		vnode = locateNode(vnode);
		var transition$$1 = vnode.data && vnode.data.transition;
		var originalDisplay = el.__vOriginalDisplay =
			el.style.display === 'none' ? '' : el.style.display;
		if (value && transition$$1) {
			vnode.data.show = true;
			enter(vnode, function () {
				el.style.display = originalDisplay;
			});
		} else {
			el.style.display = value ? originalDisplay : 'none';
		}
	},

	update: function update (el, ref, vnode) {
		var value = ref.value;
		var oldValue = ref.oldValue;

		/* istanbul ignore if */
		if (!value === !oldValue) { return }
		vnode = locateNode(vnode);
		var transition$$1 = vnode.data && vnode.data.transition;
		if (transition$$1) {
			vnode.data.show = true;
			if (value) {
				enter(vnode, function () {
					el.style.display = el.__vOriginalDisplay;
				});
			} else {
				leave(vnode, function () {
					el.style.display = 'none';
				});
			}
		} else {
			el.style.display = value ? el.__vOriginalDisplay : 'none';
		}
	},

	unbind: function unbind (
		el,
		binding,
		vnode,
		oldVnode,
		isDestroy
	) {
		if (!isDestroy) {
			el.style.display = el.__vOriginalDisplay;
		}
	}
}

var platformDirectives = {
	model: directive,
	show: show
}

/*  */

// Provides transition support for a single element/component.
// supports transition mode (out-in / in-out)

var transitionProps = {
	name: String,
	appear: Boolean,
	css: Boolean,
	mode: String,
	type: String,
	enterClass: String,
	leaveClass: String,
	enterToClass: String,
	leaveToClass: String,
	enterActiveClass: String,
	leaveActiveClass: String,
	appearClass: String,
	appearActiveClass: String,
	appearToClass: String,
	duration: [Number, String, Object]
};

// in case the child is also an abstract component, e.g. <keep-alive>
// we want to recursively retrieve the real component to be rendered
function getRealChild (vnode) {
	var compOptions = vnode && vnode.componentOptions;
	if (compOptions && compOptions.Ctor.options.abstract) {
		return getRealChild(getFirstComponentChild(compOptions.children))
	} else {
		return vnode
	}
}

function extractTransitionData (comp) {
	var data = {};
	var options = comp.$options;
	// props
	for (var key in options.propsData) {
		data[key] = comp[key];
	}
	// events.
	// extract listeners and pass them directly to the transition methods
	var listeners = options._parentListeners;
	for (var key$1 in listeners) {
		data[camelize(key$1)] = listeners[key$1];
	}
	return data
}

function placeholder (h, rawChild) {
	if (/\d-keep-alive$/.test(rawChild.tag)) {
		return h('keep-alive', {
			props: rawChild.componentOptions.propsData
		})
	}
}

function hasParentTransition (vnode) {
	while ((vnode = vnode.parent)) {
		if (vnode.data.transition) {
			return true
		}
	}
}

function isSameChild (child, oldChild) {
	return oldChild.key === child.key && oldChild.tag === child.tag
}

var Transition = {
	name: 'transition',
	props: transitionProps,
	abstract: true,

	render: function render (h) {
		var this$1 = this;

		var children = this.$slots.default;
		if (!children) {
			return
		}

		// filter out text nodes (possible whitespaces)
		children = children.filter(function (c) { return c.tag || isAsyncPlaceholder(c); });
		/* istanbul ignore if */
		if (!children.length) {
			return
		}

		// warn multiple elements
		if ("development" !== 'production' && children.length > 1) {
			warn(
				'<transition> can only be used on a single element. Use ' +
				'<transition-group> for lists.',
				this.$parent
			);
		}

		var mode = this.mode;

		// warn invalid mode
		if ("development" !== 'production' &&
			mode && mode !== 'in-out' && mode !== 'out-in'
		) {
			warn(
				'invalid <transition> mode: ' + mode,
				this.$parent
			);
		}

		var rawChild = children[0];

		// if this is a component root node and the component's
		// parent container node also has transition, skip.
		if (hasParentTransition(this.$vnode)) {
			return rawChild
		}

		// apply transition data to child
		// use getRealChild() to ignore abstract components e.g. keep-alive
		var child = getRealChild(rawChild);
		/* istanbul ignore if */
		if (!child) {
			return rawChild
		}

		if (this._leaving) {
			return placeholder(h, rawChild)
		}

		// ensure a key that is unique to the vnode type and to this transition
		// component instance. This key will be used to remove pending leaving nodes
		// during entering.
		var id = "__transition-" + (this._uid) + "-";
		child.key = child.key == null
			? child.isComment
				? id + 'comment'
				: id + child.tag
			: isPrimitive(child.key)
				? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)
				: child.key;

		var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
		var oldRawChild = this._vnode;
		var oldChild = getRealChild(oldRawChild);

		// mark v-show
		// so that the transition module can hand over the control to the directive
		if (child.data.directives && child.data.directives.some(function (d) { return d.name === 'show'; })) {
			child.data.show = true;
		}

		if (
			oldChild &&
			oldChild.data &&
			!isSameChild(child, oldChild) &&
			!isAsyncPlaceholder(oldChild) &&
			// #6687 component root is a comment node
			!(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
		) {
			// replace old child transition data with fresh one
			// important for dynamic transitions!
			var oldData = oldChild.data.transition = extend({}, data);
			// handle transition mode
			if (mode === 'out-in') {
				// return placeholder node and queue update when leave finishes
				this._leaving = true;
				mergeVNodeHook(oldData, 'afterLeave', function () {
					this$1._leaving = false;
					this$1.$forceUpdate();
				});
				return placeholder(h, rawChild)
			} else if (mode === 'in-out') {
				if (isAsyncPlaceholder(child)) {
					return oldRawChild
				}
				var delayedLeave;
				var performLeave = function () { delayedLeave(); };
				mergeVNodeHook(data, 'afterEnter', performLeave);
				mergeVNodeHook(data, 'enterCancelled', performLeave);
				mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; });
			}
		}

		return rawChild
	}
}

/*  */

// Provides transition support for list items.
// supports move transitions using the FLIP technique.

// Because the vdom's children update algorithm is "unstable" - i.e.
// it doesn't guarantee the relative positioning of removed elements,
// we force transition-group to update its children into two passes:
// in the first pass, we remove all nodes that need to be removed,
// triggering their leaving transition; in the second pass, we insert/move
// into the final desired state. This way in the second pass removed
// nodes will remain where they should be.

var props = extend({
	tag: String,
	moveClass: String
}, transitionProps);

delete props.mode;

var TransitionGroup = {
	props: props,

	render: function render (h) {
		var tag = this.tag || this.$vnode.data.tag || 'span';
		var map = Object.create(null);
		var prevChildren = this.prevChildren = this.children;
		var rawChildren = this.$slots.default || [];
		var children = this.children = [];
		var transitionData = extractTransitionData(this);

		for (var i = 0; i < rawChildren.length; i++) {
			var c = rawChildren[i];
			if (c.tag) {
				if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
					children.push(c);
					map[c.key] = c
					;(c.data || (c.data = {})).transition = transitionData;
				} else {
					var opts = c.componentOptions;
					var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
					warn(("<transition-group> children must be keyed: <" + name + ">"));
				}
			}
		}

		if (prevChildren) {
			var kept = [];
			var removed = [];
			for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
				var c$1 = prevChildren[i$1];
				c$1.data.transition = transitionData;
				c$1.data.pos = c$1.elm.getBoundingClientRect();
				if (map[c$1.key]) {
					kept.push(c$1);
				} else {
					removed.push(c$1);
				}
			}
			this.kept = h(tag, null, kept);
			this.removed = removed;
		}

		return h(tag, null, children)
	},

	beforeUpdate: function beforeUpdate () {
		// force removing pass
		this.__patch__(
			this._vnode,
			this.kept,
			false, // hydrating
			true // removeOnly (!important, avoids unnecessary moves)
		);
		this._vnode = this.kept;
	},

	updated: function updated () {
		var children = this.prevChildren;
		var moveClass = this.moveClass || ((this.name || 'v') + '-move');
		if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
			return
		}

		// we divide the work into three loops to avoid mixing DOM reads and writes
		// in each iteration - which helps prevent layout thrashing.
		children.forEach(callPendingCbs);
		children.forEach(recordPosition);
		children.forEach(applyTranslation);

		// force reflow to put everything in position
		// assign to this to avoid being removed in tree-shaking
		// $flow-disable-line
		this._reflow = document.body.offsetHeight;

		children.forEach(function (c) {
			if (c.data.moved) {
				var el = c.elm;
				var s = el.style;
				addTransitionClass(el, moveClass);
				s.transform = s.WebkitTransform = s.transitionDuration = '';
				el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
					if (!e || /transform$/.test(e.propertyName)) {
						el.removeEventListener(transitionEndEvent, cb);
						el._moveCb = null;
						removeTransitionClass(el, moveClass);
					}
				});
			}
		});
	},

	methods: {
		hasMove: function hasMove (el, moveClass) {
			/* istanbul ignore if */
			if (!hasTransition) {
				return false
			}
			/* istanbul ignore if */
			if (this._hasMove) {
				return this._hasMove
			}
			// Detect whether an element with the move class applied has
			// CSS transitions. Since the element may be inside an entering
			// transition at this very moment, we make a clone of it and remove
			// all other transition classes applied to ensure only the move class
			// is applied.
			var clone = el.cloneNode();
			if (el._transitionClasses) {
				el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); });
			}
			addClass(clone, moveClass);
			clone.style.display = 'none';
			this.$el.appendChild(clone);
			var info = getTransitionInfo(clone);
			this.$el.removeChild(clone);
			return (this._hasMove = info.hasTransform)
		}
	}
}

function callPendingCbs (c) {
	/* istanbul ignore if */
	if (c.elm._moveCb) {
		c.elm._moveCb();
	}
	/* istanbul ignore if */
	if (c.elm._enterCb) {
		c.elm._enterCb();
	}
}

function recordPosition (c) {
	c.data.newPos = c.elm.getBoundingClientRect();
}

function applyTranslation (c) {
	var oldPos = c.data.pos;
	var newPos = c.data.newPos;
	var dx = oldPos.left - newPos.left;
	var dy = oldPos.top - newPos.top;
	if (dx || dy) {
		c.data.moved = true;
		var s = c.elm.style;
		s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
		s.transitionDuration = '0s';
	}
}

var platformComponents = {
	Transition: Transition,
	TransitionGroup: TransitionGroup
}

/*  */

// install platform specific utils
Vue.config.mustUseProp = mustUseProp;
Vue.config.isReservedTag = isReservedTag;
Vue.config.isReservedAttr = isReservedAttr;
Vue.config.getTagNamespace = getTagNamespace;
Vue.config.isUnknownElement = isUnknownElement;

// install platform runtime directives & components
extend(Vue.options.directives, platformDirectives);
extend(Vue.options.components, platformComponents);

// install platform patch function
Vue.prototype.__patch__ = inBrowser ? patch : noop;

// public mount method
Vue.prototype.$mount = function (
	el,
	hydrating
) {
	el = el && inBrowser ? query(el) : undefined;
	return mountComponent(this, el, hydrating)
};

// devtools global hook
/* istanbul ignore next */
if (inBrowser) {
	setTimeout(function () {
		if (config.devtools) {
			if (devtools) {
				devtools.emit('init', Vue);
			} else if (
				"development" !== 'production' &&
				"development" !== 'test' &&
				isChrome
			) {
				console[console.info ? 'info' : 'log'](
					'Download the Vue Devtools extension for a better development experience:\n' +
					'https://github.com/vuejs/vue-devtools'
				);
			}
		}
		if ("development" !== 'production' &&
			"development" !== 'test' &&
			config.productionTip !== false &&
			typeof console !== 'undefined'
		) {
			console[console.info ? 'info' : 'log'](
				"You are running Vue in development mode.\n" +
				"Make sure to turn on production mode when deploying for production.\n" +
				"See more tips at https://vuejs.org/guide/deployment.html"
			);
		}
	}, 0);
}

/*  */

var defaultTagRE = /\{\{((?:.|\n)+?)\}\}/g;
var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;

var buildRegex = cached(function (delimiters) {
	var open = delimiters[0].replace(regexEscapeRE, '\\$&');
	var close = delimiters[1].replace(regexEscapeRE, '\\$&');
	return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
});



function parseText (
	text,
	delimiters
) {
	var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE;
	if (!tagRE.test(text)) {
		return
	}
	var tokens = [];
	var rawTokens = [];
	var lastIndex = tagRE.lastIndex = 0;
	var match, index, tokenValue;
	while ((match = tagRE.exec(text))) {
		index = match.index;
		// push text token
		if (index > lastIndex) {
			rawTokens.push(tokenValue = text.slice(lastIndex, index));
			tokens.push(JSON.stringify(tokenValue));
		}
		// tag token
		var exp = parseFilters(match[1].trim());
		tokens.push(("_s(" + exp + ")"));
		rawTokens.push({ '@binding': exp });
		lastIndex = index + match[0].length;
	}
	if (lastIndex < text.length) {
		rawTokens.push(tokenValue = text.slice(lastIndex));
		tokens.push(JSON.stringify(tokenValue));
	}
	return {
		expression: tokens.join('+'),
		tokens: rawTokens
	}
}

/*  */

function transformNode (el, options) {
	var warn = options.warn || baseWarn;
	var staticClass = getAndRemoveAttr(el, 'class');
	if ("development" !== 'production' && staticClass) {
		var res = parseText(staticClass, options.delimiters);
		if (res) {
			warn(
				"class=\"" + staticClass + "\": " +
				'Interpolation inside attributes has been removed. ' +
				'Use v-bind or the colon shorthand instead. For example, ' +
				'instead of <div class="{{ val }}">, use <div :class="val">.'
			);
		}
	}
	if (staticClass) {
		el.staticClass = JSON.stringify(staticClass);
	}
	var classBinding = getBindingAttr(el, 'class', false /* getStatic */);
	if (classBinding) {
		el.classBinding = classBinding;
	}
}

function genData (el) {
	var data = '';
	if (el.staticClass) {
		data += "staticClass:" + (el.staticClass) + ",";
	}
	if (el.classBinding) {
		data += "class:" + (el.classBinding) + ",";
	}
	return data
}

var klass$1 = {
	staticKeys: ['staticClass'],
	transformNode: transformNode,
	genData: genData
}

/*  */

function transformNode$1 (el, options) {
	var warn = options.warn || baseWarn;
	var staticStyle = getAndRemoveAttr(el, 'style');
	if (staticStyle) {
		/* istanbul ignore if */
		{
			var res = parseText(staticStyle, options.delimiters);
			if (res) {
				warn(
					"style=\"" + staticStyle + "\": " +
					'Interpolation inside attributes has been removed. ' +
					'Use v-bind or the colon shorthand instead. For example, ' +
					'instead of <div style="{{ val }}">, use <div :style="val">.'
				);
			}
		}
		el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
	}

	var styleBinding = getBindingAttr(el, 'style', false /* getStatic */);
	if (styleBinding) {
		el.styleBinding = styleBinding;
	}
}

function genData$1 (el) {
	var data = '';
	if (el.staticStyle) {
		data += "staticStyle:" + (el.staticStyle) + ",";
	}
	if (el.styleBinding) {
		data += "style:(" + (el.styleBinding) + "),";
	}
	return data
}

var style$1 = {
	staticKeys: ['staticStyle'],
	transformNode: transformNode$1,
	genData: genData$1
}

/*  */

var decoder;

var he = {
	decode: function decode (html) {
		decoder = decoder || document.createElement('div');
		decoder.innerHTML = html;
		return decoder.textContent
	}
}

/*  */

var isUnaryTag = makeMap(
	'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
	'link,meta,param,source,track,wbr'
);

// Elements that you can, intentionally, leave open
// (and which close themselves)
var canBeLeftOpenTag = makeMap(
	'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source'
);

// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
var isNonPhrasingTag = makeMap(
	'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
	'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
	'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
	'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
	'title,tr,track'
);

/**
 * Not type-checking this file because it's mostly vendor code.
 */

/*!
 * HTML Parser By John Resig (ejohn.org)
 * Modified by Juriy "kangax" Zaytsev
 * Original code by Erik Arvidsson, Mozilla Public License
 * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
 */

// Regular Expressions for parsing tags and attributes
var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
// could use https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName
// but for Vue templates we can enforce a simple charset
var ncname = '[a-zA-Z_][\\w\\-\\.]*';
var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")";
var startTagOpen = new RegExp(("^<" + qnameCapture));
var startTagClose = /^\s*(\/?)>/;
var endTag = new RegExp(("^<\\/" + qnameCapture + "[^>]*>"));
var doctype = /^<!DOCTYPE [^>]+>/i;
// #7298: escape - to avoid being pased as HTML comment when inlined in page
var comment = /^<!\--/;
var conditionalComment = /^<!\[/;

var IS_REGEX_CAPTURING_BROKEN = false;
'x'.replace(/x(.)?/g, function (m, g) {
	IS_REGEX_CAPTURING_BROKEN = g === '';
});

// Special Elements (can contain anything)
var isPlainTextElement = makeMap('script,style,textarea', true);
var reCache = {};

var decodingMap = {
	'&lt;': '<',
	'&gt;': '>',
	'&quot;': '"',
	'&amp;': '&',
	'&#10;': '\n',
	'&#9;': '\t'
};
var encodedAttr = /&(?:lt|gt|quot|amp);/g;
var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#10|#9);/g;

// #5992
var isIgnoreNewlineTag = makeMap('pre,textarea', true);
var shouldIgnoreFirstNewline = function (tag, html) { return tag && isIgnoreNewlineTag(tag) && html[0] === '\n'; };

function decodeAttr (value, shouldDecodeNewlines) {
	var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
	return value.replace(re, function (match) { return decodingMap[match]; })
}

function parseHTML (html, options) {
	var stack = [];
	var expectHTML = options.expectHTML;
	var isUnaryTag$$1 = options.isUnaryTag || no;
	var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
	var index = 0;
	var last, lastTag;
	while (html) {
		last = html;
		// Make sure we're not in a plaintext content element like script/style
		if (!lastTag || !isPlainTextElement(lastTag)) {
			var textEnd = html.indexOf('<');
			if (textEnd === 0) {
				// Comment:
				if (comment.test(html)) {
					var commentEnd = html.indexOf('-->');

					if (commentEnd >= 0) {
						if (options.shouldKeepComment) {
							options.comment(html.substring(4, commentEnd));
						}
						advance(commentEnd + 3);
						continue
					}
				}

				// http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
				if (conditionalComment.test(html)) {
					var conditionalEnd = html.indexOf(']>');

					if (conditionalEnd >= 0) {
						advance(conditionalEnd + 2);
						continue
					}
				}

				// Doctype:
				var doctypeMatch = html.match(doctype);
				if (doctypeMatch) {
					advance(doctypeMatch[0].length);
					continue
				}

				// End tag:
				var endTagMatch = html.match(endTag);
				if (endTagMatch) {
					var curIndex = index;
					advance(endTagMatch[0].length);
					parseEndTag(endTagMatch[1], curIndex, index);
					continue
				}

				// Start tag:
				var startTagMatch = parseStartTag();
				if (startTagMatch) {
					handleStartTag(startTagMatch);
					if (shouldIgnoreFirstNewline(lastTag, html)) {
						advance(1);
					}
					continue
				}
			}

			var text = (void 0), rest = (void 0), next = (void 0);
			if (textEnd >= 0) {
				rest = html.slice(textEnd);
				while (
					!endTag.test(rest) &&
					!startTagOpen.test(rest) &&
					!comment.test(rest) &&
					!conditionalComment.test(rest)
				) {
					// < in plain text, be forgiving and treat it as text
					next = rest.indexOf('<', 1);
					if (next < 0) { break }
					textEnd += next;
					rest = html.slice(textEnd);
				}
				text = html.substring(0, textEnd);
				advance(textEnd);
			}

			if (textEnd < 0) {
				text = html;
				html = '';
			}

			if (options.chars && text) {
				options.chars(text);
			}
		} else {
			var endTagLength = 0;
			var stackedTag = lastTag.toLowerCase();
			var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
			var rest$1 = html.replace(reStackedTag, function (all, text, endTag) {
				endTagLength = endTag.length;
				if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
					text = text
						.replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
						.replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
				}
				if (shouldIgnoreFirstNewline(stackedTag, text)) {
					text = text.slice(1);
				}
				if (options.chars) {
					options.chars(text);
				}
				return ''
			});
			index += html.length - rest$1.length;
			html = rest$1;
			parseEndTag(stackedTag, index - endTagLength, index);
		}

		if (html === last) {
			options.chars && options.chars(html);
			if ("development" !== 'production' && !stack.length && options.warn) {
				options.warn(("Mal-formatted tag at end of template: \"" + html + "\""));
			}
			break
		}
	}

	// Clean up any remaining tags
	parseEndTag();

	function advance (n) {
		index += n;
		html = html.substring(n);
	}

	function parseStartTag () {
		var start = html.match(startTagOpen);
		if (start) {
			var match = {
				tagName: start[1],
				attrs: [],
				start: index
			};
			advance(start[0].length);
			var end, attr;
			while (!(end = html.match(startTagClose)) && (attr = html.match(attribute))) {
				advance(attr[0].length);
				match.attrs.push(attr);
			}
			if (end) {
				match.unarySlash = end[1];
				advance(end[0].length);
				match.end = index;
				return match
			}
		}
	}

	function handleStartTag (match) {
		var tagName = match.tagName;
		var unarySlash = match.unarySlash;

		if (expectHTML) {
			if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
				parseEndTag(lastTag);
			}
			if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
				parseEndTag(tagName);
			}
		}

		var unary = isUnaryTag$$1(tagName) || !!unarySlash;

		var l = match.attrs.length;
		var attrs = new Array(l);
		for (var i = 0; i < l; i++) {
			var args = match.attrs[i];
			// hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
			if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
				if (args[3] === '') { delete args[3]; }
				if (args[4] === '') { delete args[4]; }
				if (args[5] === '') { delete args[5]; }
			}
			var value = args[3] || args[4] || args[5] || '';
			var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href'
				? options.shouldDecodeNewlinesForHref
				: options.shouldDecodeNewlines;
			attrs[i] = {
				name: args[1],
				value: decodeAttr(value, shouldDecodeNewlines)
			};
		}

		if (!unary) {
			stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs });
			lastTag = tagName;
		}

		if (options.start) {
			options.start(tagName, attrs, unary, match.start, match.end);
		}
	}

	function parseEndTag (tagName, start, end) {
		var pos, lowerCasedTagName;
		if (start == null) { start = index; }
		if (end == null) { end = index; }

		if (tagName) {
			lowerCasedTagName = tagName.toLowerCase();
		}

		// Find the closest opened tag of the same type
		if (tagName) {
			for (pos = stack.length - 1; pos >= 0; pos--) {
				if (stack[pos].lowerCasedTag === lowerCasedTagName) {
					break
				}
			}
		} else {
			// If no tag name is provided, clean shop
			pos = 0;
		}

		if (pos >= 0) {
			// Close all the open elements, up the stack
			for (var i = stack.length - 1; i >= pos; i--) {
				if ("development" !== 'production' &&
					(i > pos || !tagName) &&
					options.warn
				) {
					options.warn(
						("tag <" + (stack[i].tag) + "> has no matching end tag.")
					);
				}
				if (options.end) {
					options.end(stack[i].tag, start, end);
				}
			}

			// Remove the open elements from the stack
			stack.length = pos;
			lastTag = pos && stack[pos - 1].tag;
		} else if (lowerCasedTagName === 'br') {
			if (options.start) {
				options.start(tagName, [], true, start, end);
			}
		} else if (lowerCasedTagName === 'p') {
			if (options.start) {
				options.start(tagName, [], false, start, end);
			}
			if (options.end) {
				options.end(tagName, start, end);
			}
		}
	}
}

/*  */

var onRE = /^@|^v-on:/;
var dirRE = /^v-|^@|^:/;
var forAliasRE = /([^]*?)\s+(?:in|of)\s+([^]*)/;
var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
var stripParensRE = /^\(|\)$/g;

var argRE = /:(.*)$/;
var bindRE = /^:|^v-bind:/;
var modifierRE = /\.[^.]+/g;

var decodeHTMLCached = cached(he.decode);

// configurable state
var warn$2;
var delimiters;
var transforms;
var preTransforms;
var postTransforms;
var platformIsPreTag;
var platformMustUseProp;
var platformGetTagNamespace;



function createASTElement (
	tag,
	attrs,
	parent
) {
	return {
		type: 1,
		tag: tag,
		attrsList: attrs,
		attrsMap: makeAttrsMap(attrs),
		parent: parent,
		children: []
	}
}

/**
 * Convert HTML string to AST.
 */
function parse (
	template,
	options
) {
	warn$2 = options.warn || baseWarn;

	platformIsPreTag = options.isPreTag || no;
	platformMustUseProp = options.mustUseProp || no;
	platformGetTagNamespace = options.getTagNamespace || no;

	transforms = pluckModuleFunction(options.modules, 'transformNode');
	preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
	postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');

	delimiters = options.delimiters;

	var stack = [];
	var preserveWhitespace = options.preserveWhitespace !== false;
	var root;
	var currentParent;
	var inVPre = false;
	var inPre = false;
	var warned = false;

	function warnOnce (msg) {
		if (!warned) {
			warned = true;
			warn$2(msg);
		}
	}

	function closeElement (element) {
		// check pre state
		if (element.pre) {
			inVPre = false;
		}
		if (platformIsPreTag(element.tag)) {
			inPre = false;
		}
		// apply post-transforms
		for (var i = 0; i < postTransforms.length; i++) {
			postTransforms[i](element, options);
		}
	}

	parseHTML(template, {
		warn: warn$2,
		expectHTML: options.expectHTML,
		isUnaryTag: options.isUnaryTag,
		canBeLeftOpenTag: options.canBeLeftOpenTag,
		shouldDecodeNewlines: options.shouldDecodeNewlines,
		shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
		shouldKeepComment: options.comments,
		start: function start (tag, attrs, unary) {
			// check namespace.
			// inherit parent ns if there is one
			var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);

			// handle IE svg bug
			/* istanbul ignore if */
			if (isIE && ns === 'svg') {
				attrs = guardIESVGBug(attrs);
			}

			var element = createASTElement(tag, attrs, currentParent);
			if (ns) {
				element.ns = ns;
			}

			if (isForbiddenTag(element) && !isServerRendering()) {
				element.forbidden = true;
				"development" !== 'production' && warn$2(
					'Templates should only be responsible for mapping the state to the ' +
					'UI. Avoid placing tags with side-effects in your templates, such as ' +
					"<" + tag + ">" + ', as they will not be parsed.'
				);
			}

			// apply pre-transforms
			for (var i = 0; i < preTransforms.length; i++) {
				element = preTransforms[i](element, options) || element;
			}

			if (!inVPre) {
				processPre(element);
				if (element.pre) {
					inVPre = true;
				}
			}
			if (platformIsPreTag(element.tag)) {
				inPre = true;
			}
			if (inVPre) {
				processRawAttrs(element);
			} else if (!element.processed) {
				// structural directives
				processFor(element);
				processIf(element);
				processOnce(element);
				// element-scope stuff
				processElement(element, options);
			}

			function checkRootConstraints (el) {
				{
					if (el.tag === 'slot' || el.tag === 'template') {
						warnOnce(
							"Cannot use <" + (el.tag) + "> as component root element because it may " +
							'contain multiple nodes.'
						);
					}
					if (el.attrsMap.hasOwnProperty('v-for')) {
						warnOnce(
							'Cannot use v-for on stateful component root element because ' +
							'it renders multiple elements.'
						);
					}
				}
			}

			// tree management
			if (!root) {
				root = element;
				checkRootConstraints(root);
			} else if (!stack.length) {
				// allow root elements with v-if, v-else-if and v-else
				if (root.if && (element.elseif || element.else)) {
					checkRootConstraints(element);
					addIfCondition(root, {
						exp: element.elseif,
						block: element
					});
				} else {
					warnOnce(
						"Component template should contain exactly one root element. " +
						"If you are using v-if on multiple elements, " +
						"use v-else-if to chain them instead."
					);
				}
			}
			if (currentParent && !element.forbidden) {
				if (element.elseif || element.else) {
					processIfConditions(element, currentParent);
				} else if (element.slotScope) { // scoped slot
					currentParent.plain = false;
					var name = element.slotTarget || '"default"';(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
				} else {
					currentParent.children.push(element);
					element.parent = currentParent;
				}
			}
			if (!unary) {
				currentParent = element;
				stack.push(element);
			} else {
				closeElement(element);
			}
		},

		end: function end () {
			// remove trailing whitespace
			var element = stack[stack.length - 1];
			var lastNode = element.children[element.children.length - 1];
			if (lastNode && lastNode.type === 3 && lastNode.text === ' ' && !inPre) {
				element.children.pop();
			}
			// pop stack
			stack.length -= 1;
			currentParent = stack[stack.length - 1];
			closeElement(element);
		},

		chars: function chars (text) {
			if (!currentParent) {
				{
					if (text === template) {
						warnOnce(
							'Component template requires a root element, rather than just text.'
						);
					} else if ((text = text.trim())) {
						warnOnce(
							("text \"" + text + "\" outside root element will be ignored.")
						);
					}
				}
				return
			}
			// IE textarea placeholder bug
			/* istanbul ignore if */
			if (isIE &&
				currentParent.tag === 'textarea' &&
				currentParent.attrsMap.placeholder === text
			) {
				return
			}
			var children = currentParent.children;
			text = inPre || text.trim()
				? isTextTag(currentParent) ? text : decodeHTMLCached(text)
				// only preserve whitespace if its not right after a starting tag
				: preserveWhitespace && children.length ? ' ' : '';
			if (text) {
				var res;
				if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
					children.push({
						type: 2,
						expression: res.expression,
						tokens: res.tokens,
						text: text
					});
				} else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
					children.push({
						type: 3,
						text: text
					});
				}
			}
		},
		comment: function comment (text) {
			currentParent.children.push({
				type: 3,
				text: text,
				isComment: true
			});
		}
	});
	return root
}

function processPre (el) {
	if (getAndRemoveAttr(el, 'v-pre') != null) {
		el.pre = true;
	}
}

function processRawAttrs (el) {
	var l = el.attrsList.length;
	if (l) {
		var attrs = el.attrs = new Array(l);
		for (var i = 0; i < l; i++) {
			attrs[i] = {
				name: el.attrsList[i].name,
				value: JSON.stringify(el.attrsList[i].value)
			};
		}
	} else if (!el.pre) {
		// non root node in pre blocks with no attributes
		el.plain = true;
	}
}

function processElement (element, options) {
	processKey(element);

	// determine whether this is a plain element after
	// removing structural attributes
	element.plain = !element.key && !element.attrsList.length;

	processRef(element);
	processSlot(element);
	processComponent(element);
	for (var i = 0; i < transforms.length; i++) {
		element = transforms[i](element, options) || element;
	}
	processAttrs(element);
}

function processKey (el) {
	var exp = getBindingAttr(el, 'key');
	if (exp) {
		if ("development" !== 'production' && el.tag === 'template') {
			warn$2("<template> cannot be keyed. Place the key on real elements instead.");
		}
		el.key = exp;
	}
}

function processRef (el) {
	var ref = getBindingAttr(el, 'ref');
	if (ref) {
		el.ref = ref;
		el.refInFor = checkInFor(el);
	}
}

function processFor (el) {
	var exp;
	if ((exp = getAndRemoveAttr(el, 'v-for'))) {
		var res = parseFor(exp);
		if (res) {
			extend(el, res);
		} else {
			warn$2(
				("Invalid v-for expression: " + exp)
			);
		}
	}
}



function parseFor (exp) {
	var inMatch = exp.match(forAliasRE);
	if (!inMatch) { return }
	var res = {};
	res.for = inMatch[2].trim();
	var alias = inMatch[1].trim().replace(stripParensRE, '');
	var iteratorMatch = alias.match(forIteratorRE);
	if (iteratorMatch) {
		res.alias = alias.replace(forIteratorRE, '');
		res.iterator1 = iteratorMatch[1].trim();
		if (iteratorMatch[2]) {
			res.iterator2 = iteratorMatch[2].trim();
		}
	} else {
		res.alias = alias;
	}
	return res
}

function processIf (el) {
	var exp = getAndRemoveAttr(el, 'v-if');
	if (exp) {
		el.if = exp;
		addIfCondition(el, {
			exp: exp,
			block: el
		});
	} else {
		if (getAndRemoveAttr(el, 'v-else') != null) {
			el.else = true;
		}
		var elseif = getAndRemoveAttr(el, 'v-else-if');
		if (elseif) {
			el.elseif = elseif;
		}
	}
}

function processIfConditions (el, parent) {
	var prev = findPrevElement(parent.children);
	if (prev && prev.if) {
		addIfCondition(prev, {
			exp: el.elseif,
			block: el
		});
	} else {
		warn$2(
			"v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " +
			"used on element <" + (el.tag) + "> without corresponding v-if."
		);
	}
}

function findPrevElement (children) {
	var i = children.length;
	while (i--) {
		if (children[i].type === 1) {
			return children[i]
		} else {
			if ("development" !== 'production' && children[i].text !== ' ') {
				warn$2(
					"text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " +
					"will be ignored."
				);
			}
			children.pop();
		}
	}
}

function addIfCondition (el, condition) {
	if (!el.ifConditions) {
		el.ifConditions = [];
	}
	el.ifConditions.push(condition);
}

function processOnce (el) {
	var once$$1 = getAndRemoveAttr(el, 'v-once');
	if (once$$1 != null) {
		el.once = true;
	}
}

function processSlot (el) {
	if (el.tag === 'slot') {
		el.slotName = getBindingAttr(el, 'name');
		if ("development" !== 'production' && el.key) {
			warn$2(
				"`key` does not work on <slot> because slots are abstract outlets " +
				"and can possibly expand into multiple elements. " +
				"Use the key on a wrapping element instead."
			);
		}
	} else {
		var slotScope;
		if (el.tag === 'template') {
			slotScope = getAndRemoveAttr(el, 'scope');
			/* istanbul ignore if */
			if ("development" !== 'production' && slotScope) {
				warn$2(
					"the \"scope\" attribute for scoped slots have been deprecated and " +
					"replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " +
					"can also be used on plain elements in addition to <template> to " +
					"denote scoped slots.",
					true
				);
			}
			el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope');
		} else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
			/* istanbul ignore if */
			if ("development" !== 'production' && el.attrsMap['v-for']) {
				warn$2(
					"Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " +
					"(v-for takes higher priority). Use a wrapper <template> for the " +
					"scoped slot to make it clearer.",
					true
				);
			}
			el.slotScope = slotScope;
		}
		var slotTarget = getBindingAttr(el, 'slot');
		if (slotTarget) {
			el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
			// preserve slot as an attribute for native shadow DOM compat
			// only for non-scoped slots.
			if (el.tag !== 'template' && !el.slotScope) {
				addAttr(el, 'slot', slotTarget);
			}
		}
	}
}

function processComponent (el) {
	var binding;
	if ((binding = getBindingAttr(el, 'is'))) {
		el.component = binding;
	}
	if (getAndRemoveAttr(el, 'inline-template') != null) {
		el.inlineTemplate = true;
	}
}

function processAttrs (el) {
	var list = el.attrsList;
	var i, l, name, rawName, value, modifiers, isProp;
	for (i = 0, l = list.length; i < l; i++) {
		name = rawName = list[i].name;
		value = list[i].value;
		if (dirRE.test(name)) {
			// mark element as dynamic
			el.hasBindings = true;
			// modifiers
			modifiers = parseModifiers(name);
			if (modifiers) {
				name = name.replace(modifierRE, '');
			}
			if (bindRE.test(name)) { // v-bind
				name = name.replace(bindRE, '');
				value = parseFilters(value);
				isProp = false;
				if (modifiers) {
					if (modifiers.prop) {
						isProp = true;
						name = camelize(name);
						if (name === 'innerHtml') { name = 'innerHTML'; }
					}
					if (modifiers.camel) {
						name = camelize(name);
					}
					if (modifiers.sync) {
						addHandler(
							el,
							("update:" + (camelize(name))),
							genAssignmentCode(value, "$event")
						);
					}
				}
				if (isProp || (
					!el.component && platformMustUseProp(el.tag, el.attrsMap.type, name)
				)) {
					addProp(el, name, value);
				} else {
					addAttr(el, name, value);
				}
			} else if (onRE.test(name)) { // v-on
				name = name.replace(onRE, '');
				addHandler(el, name, value, modifiers, false, warn$2);
			} else { // normal directives
				name = name.replace(dirRE, '');
				// parse arg
				var argMatch = name.match(argRE);
				var arg = argMatch && argMatch[1];
				if (arg) {
					name = name.slice(0, -(arg.length + 1));
				}
				addDirective(el, name, rawName, value, arg, modifiers);
				if ("development" !== 'production' && name === 'model') {
					checkForAliasModel(el, value);
				}
			}
		} else {
			// literal attribute
			{
				var res = parseText(value, delimiters);
				if (res) {
					warn$2(
						name + "=\"" + value + "\": " +
						'Interpolation inside attributes has been removed. ' +
						'Use v-bind or the colon shorthand instead. For example, ' +
						'instead of <div id="{{ val }}">, use <div :id="val">.'
					);
				}
			}
			addAttr(el, name, JSON.stringify(value));
			// #6887 firefox doesn't update muted state if set via attribute
			// even immediately after element creation
			if (!el.component &&
					name === 'muted' &&
					platformMustUseProp(el.tag, el.attrsMap.type, name)) {
				addProp(el, name, 'true');
			}
		}
	}
}

function checkInFor (el) {
	var parent = el;
	while (parent) {
		if (parent.for !== undefined) {
			return true
		}
		parent = parent.parent;
	}
	return false
}

function parseModifiers (name) {
	var match = name.match(modifierRE);
	if (match) {
		var ret = {};
		match.forEach(function (m) { ret[m.slice(1)] = true; });
		return ret
	}
}

function makeAttrsMap (attrs) {
	var map = {};
	for (var i = 0, l = attrs.length; i < l; i++) {
		if (
			"development" !== 'production' &&
			map[attrs[i].name] && !isIE && !isEdge
		) {
			warn$2('duplicate attribute: ' + attrs[i].name);
		}
		map[attrs[i].name] = attrs[i].value;
	}
	return map
}

// for script (e.g. type="x/template") or style, do not decode content
function isTextTag (el) {
	return el.tag === 'script' || el.tag === 'style'
}

function isForbiddenTag (el) {
	return (
		el.tag === 'style' ||
		(el.tag === 'script' && (
			!el.attrsMap.type ||
			el.attrsMap.type === 'text/javascript'
		))
	)
}

var ieNSBug = /^xmlns:NS\d+/;
var ieNSPrefix = /^NS\d+:/;

/* istanbul ignore next */
function guardIESVGBug (attrs) {
	var res = [];
	for (var i = 0; i < attrs.length; i++) {
		var attr = attrs[i];
		if (!ieNSBug.test(attr.name)) {
			attr.name = attr.name.replace(ieNSPrefix, '');
			res.push(attr);
		}
	}
	return res
}

function checkForAliasModel (el, value) {
	var _el = el;
	while (_el) {
		if (_el.for && _el.alias === value) {
			warn$2(
				"<" + (el.tag) + " v-model=\"" + value + "\">: " +
				"You are binding v-model directly to a v-for iteration alias. " +
				"This will not be able to modify the v-for source array because " +
				"writing to the alias is like modifying a function local variable. " +
				"Consider using an array of objects and use v-model on an object property instead."
			);
		}
		_el = _el.parent;
	}
}

/*  */

/**
 * Expand input[v-model] with dyanmic type bindings into v-if-else chains
 * Turn this:
 *   <input v-model="data[type]" :type="type">
 * into this:
 *   <input v-if="type === 'checkbox'" type="checkbox" v-model="data[type]">
 *   <input v-else-if="type === 'radio'" type="radio" v-model="data[type]">
 *   <input v-else :type="type" v-model="data[type]">
 */

function preTransformNode (el, options) {
	if (el.tag === 'input') {
		var map = el.attrsMap;
		if (!map['v-model']) {
			return
		}

		var typeBinding;
		if (map[':type'] || map['v-bind:type']) {
			typeBinding = getBindingAttr(el, 'type');
		}
		if (!map.type && !typeBinding && map['v-bind']) {
			typeBinding = "(" + (map['v-bind']) + ").type";
		}

		if (typeBinding) {
			var ifCondition = getAndRemoveAttr(el, 'v-if', true);
			var ifConditionExtra = ifCondition ? ("&&(" + ifCondition + ")") : "";
			var hasElse = getAndRemoveAttr(el, 'v-else', true) != null;
			var elseIfCondition = getAndRemoveAttr(el, 'v-else-if', true);
			// 1. checkbox
			var branch0 = cloneASTElement(el);
			// process for on the main node
			processFor(branch0);
			addRawAttr(branch0, 'type', 'checkbox');
			processElement(branch0, options);
			branch0.processed = true; // prevent it from double-processed
			branch0.if = "(" + typeBinding + ")==='checkbox'" + ifConditionExtra;
			addIfCondition(branch0, {
				exp: branch0.if,
				block: branch0
			});
			// 2. add radio else-if condition
			var branch1 = cloneASTElement(el);
			getAndRemoveAttr(branch1, 'v-for', true);
			addRawAttr(branch1, 'type', 'radio');
			processElement(branch1, options);
			addIfCondition(branch0, {
				exp: "(" + typeBinding + ")==='radio'" + ifConditionExtra,
				block: branch1
			});
			// 3. other
			var branch2 = cloneASTElement(el);
			getAndRemoveAttr(branch2, 'v-for', true);
			addRawAttr(branch2, ':type', typeBinding);
			processElement(branch2, options);
			addIfCondition(branch0, {
				exp: ifCondition,
				block: branch2
			});

			if (hasElse) {
				branch0.else = true;
			} else if (elseIfCondition) {
				branch0.elseif = elseIfCondition;
			}

			return branch0
		}
	}
}

function cloneASTElement (el) {
	return createASTElement(el.tag, el.attrsList.slice(), el.parent)
}

var model$2 = {
	preTransformNode: preTransformNode
}

var modules$1 = [
	klass$1,
	style$1,
	model$2
]

/*  */

function text (el, dir) {
	if (dir.value) {
		addProp(el, 'textContent', ("_s(" + (dir.value) + ")"));
	}
}

/*  */

function html (el, dir) {
	if (dir.value) {
		addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"));
	}
}

var directives$1 = {
	model: model,
	text: text,
	html: html
}

/*  */

var baseOptions = {
	expectHTML: true,
	modules: modules$1,
	directives: directives$1,
	isPreTag: isPreTag,
	isUnaryTag: isUnaryTag,
	mustUseProp: mustUseProp,
	canBeLeftOpenTag: canBeLeftOpenTag,
	isReservedTag: isReservedTag,
	getTagNamespace: getTagNamespace,
	staticKeys: genStaticKeys(modules$1)
};

/*  */

var isStaticKey;
var isPlatformReservedTag;

var genStaticKeysCached = cached(genStaticKeys$1);

/**
 * Goal of the optimizer: walk the generated template AST tree
 * and detect sub-trees that are purely static, i.e. parts of
 * the DOM that never needs to change.
 *
 * Once we detect these sub-trees, we can:
 *
 * 1. Hoist them into constants, so that we no longer need to
 *    create fresh nodes for them on each re-render;
 * 2. Completely skip them in the patching process.
 */
function optimize (root, options) {
	if (!root) { return }
	isStaticKey = genStaticKeysCached(options.staticKeys || '');
	isPlatformReservedTag = options.isReservedTag || no;
	// first pass: mark all non-static nodes.
	markStatic$1(root);
	// second pass: mark static roots.
	markStaticRoots(root, false);
}

function genStaticKeys$1 (keys) {
	return makeMap(
		'type,tag,attrsList,attrsMap,plain,parent,children,attrs' +
		(keys ? ',' + keys : '')
	)
}

function markStatic$1 (node) {
	node.static = isStatic(node);
	if (node.type === 1) {
		// do not make component slot content static. this avoids
		// 1. components not able to mutate slot nodes
		// 2. static slot content fails for hot-reloading
		if (
			!isPlatformReservedTag(node.tag) &&
			node.tag !== 'slot' &&
			node.attrsMap['inline-template'] == null
		) {
			return
		}
		for (var i = 0, l = node.children.length; i < l; i++) {
			var child = node.children[i];
			markStatic$1(child);
			if (!child.static) {
				node.static = false;
			}
		}
		if (node.ifConditions) {
			for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
				var block = node.ifConditions[i$1].block;
				markStatic$1(block);
				if (!block.static) {
					node.static = false;
				}
			}
		}
	}
}

function markStaticRoots (node, isInFor) {
	if (node.type === 1) {
		if (node.static || node.once) {
			node.staticInFor = isInFor;
		}
		// For a node to qualify as a static root, it should have children that
		// are not just static text. Otherwise the cost of hoisting out will
		// outweigh the benefits and it's better off to just always render it fresh.
		if (node.static && node.children.length && !(
			node.children.length === 1 &&
			node.children[0].type === 3
		)) {
			node.staticRoot = true;
			return
		} else {
			node.staticRoot = false;
		}
		if (node.children) {
			for (var i = 0, l = node.children.length; i < l; i++) {
				markStaticRoots(node.children[i], isInFor || !!node.for);
			}
		}
		if (node.ifConditions) {
			for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
				markStaticRoots(node.ifConditions[i$1].block, isInFor);
			}
		}
	}
}

function isStatic (node) {
	if (node.type === 2) { // expression
		return false
	}
	if (node.type === 3) { // text
		return true
	}
	return !!(node.pre || (
		!node.hasBindings && // no dynamic bindings
		!node.if && !node.for && // not v-if or v-for or v-else
		!isBuiltInTag(node.tag) && // not a built-in
		isPlatformReservedTag(node.tag) && // not a component
		!isDirectChildOfTemplateFor(node) &&
		Object.keys(node).every(isStaticKey)
	))
}

function isDirectChildOfTemplateFor (node) {
	while (node.parent) {
		node = node.parent;
		if (node.tag !== 'template') {
			return false
		}
		if (node.for) {
			return true
		}
	}
	return false
}

/*  */

var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function\s*\(/;
var simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/;

// KeyboardEvent.keyCode aliases
var keyCodes = {
	esc: 27,
	tab: 9,
	enter: 13,
	space: 32,
	up: 38,
	left: 37,
	right: 39,
	down: 40,
	'delete': [8, 46]
};

// KeyboardEvent.key aliases
var keyNames = {
	esc: 'Escape',
	tab: 'Tab',
	enter: 'Enter',
	space: ' ',
	// #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
	up: ['Up', 'ArrowUp'],
	left: ['Left', 'ArrowLeft'],
	right: ['Right', 'ArrowRight'],
	down: ['Down', 'ArrowDown'],
	'delete': ['Backspace', 'Delete']
};

// #4868: modifiers that prevent the execution of the listener
// need to explicitly return null so that we can determine whether to remove
// the listener for .once
var genGuard = function (condition) { return ("if(" + condition + ")return null;"); };

var modifierCode = {
	stop: '$event.stopPropagation();',
	prevent: '$event.preventDefault();',
	self: genGuard("$event.target !== $event.currentTarget"),
	ctrl: genGuard("!$event.ctrlKey"),
	shift: genGuard("!$event.shiftKey"),
	alt: genGuard("!$event.altKey"),
	meta: genGuard("!$event.metaKey"),
	left: genGuard("'button' in $event && $event.button !== 0"),
	middle: genGuard("'button' in $event && $event.button !== 1"),
	right: genGuard("'button' in $event && $event.button !== 2")
};

function genHandlers (
	events,
	isNative,
	warn
) {
	var res = isNative ? 'nativeOn:{' : 'on:{';
	for (var name in events) {
		res += "\"" + name + "\":" + (genHandler(name, events[name])) + ",";
	}
	return res.slice(0, -1) + '}'
}

function genHandler (
	name,
	handler
) {
	if (!handler) {
		return 'function(){}'
	}

	if (Array.isArray(handler)) {
		return ("[" + (handler.map(function (handler) { return genHandler(name, handler); }).join(',')) + "]")
	}

	var isMethodPath = simplePathRE.test(handler.value);
	var isFunctionExpression = fnExpRE.test(handler.value);

	if (!handler.modifiers) {
		if (isMethodPath || isFunctionExpression) {
			return handler.value
		}
		/* istanbul ignore if */
		return ("function($event){" + (handler.value) + "}") // inline statement
	} else {
		var code = '';
		var genModifierCode = '';
		var keys = [];
		for (var key in handler.modifiers) {
			if (modifierCode[key]) {
				genModifierCode += modifierCode[key];
				// left/right
				if (keyCodes[key]) {
					keys.push(key);
				}
			} else if (key === 'exact') {
				var modifiers = (handler.modifiers);
				genModifierCode += genGuard(
					['ctrl', 'shift', 'alt', 'meta']
						.filter(function (keyModifier) { return !modifiers[keyModifier]; })
						.map(function (keyModifier) { return ("$event." + keyModifier + "Key"); })
						.join('||')
				);
			} else {
				keys.push(key);
			}
		}
		if (keys.length) {
			code += genKeyFilter(keys);
		}
		// Make sure modifiers like prevent and stop get executed after key filtering
		if (genModifierCode) {
			code += genModifierCode;
		}
		var handlerCode = isMethodPath
			? ("return " + (handler.value) + "($event)")
			: isFunctionExpression
				? ("return (" + (handler.value) + ")($event)")
				: handler.value;
		/* istanbul ignore if */
		return ("function($event){" + code + handlerCode + "}")
	}
}

function genKeyFilter (keys) {
	return ("if(!('button' in $event)&&" + (keys.map(genFilterCode).join('&&')) + ")return null;")
}

function genFilterCode (key) {
	var keyVal = parseInt(key, 10);
	if (keyVal) {
		return ("$event.keyCode!==" + keyVal)
	}
	var keyCode = keyCodes[key];
	var keyName = keyNames[key];
	return (
		"_k($event.keyCode," +
		(JSON.stringify(key)) + "," +
		(JSON.stringify(keyCode)) + "," +
		"$event.key," +
		"" + (JSON.stringify(keyName)) +
		")"
	)
}

/*  */

function on (el, dir) {
	if ("development" !== 'production' && dir.modifiers) {
		warn("v-on without argument does not support modifiers.");
	}
	el.wrapListeners = function (code) { return ("_g(" + code + "," + (dir.value) + ")"); };
}

/*  */

function bind$1 (el, dir) {
	el.wrapData = function (code) {
		return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + "," + (dir.modifiers && dir.modifiers.prop ? 'true' : 'false') + (dir.modifiers && dir.modifiers.sync ? ',true' : '') + ")")
	};
}

/*  */

var baseDirectives = {
	on: on,
	bind: bind$1,
	cloak: noop
}

/*  */

var CodegenState = function CodegenState (options) {
	this.options = options;
	this.warn = options.warn || baseWarn;
	this.transforms = pluckModuleFunction(options.modules, 'transformCode');
	this.dataGenFns = pluckModuleFunction(options.modules, 'genData');
	this.directives = extend(extend({}, baseDirectives), options.directives);
	var isReservedTag = options.isReservedTag || no;
	this.maybeComponent = function (el) { return !isReservedTag(el.tag); };
	this.onceId = 0;
	this.staticRenderFns = [];
};



function generate (
	ast,
	options
) {
	var state = new CodegenState(options);
	var code = ast ? genElement(ast, state) : '_c("div")';
	return {
		render: ("with(this){return " + code + "}"),
		staticRenderFns: state.staticRenderFns
	}
}

function genElement (el, state) {
	if (el.staticRoot && !el.staticProcessed) {
		return genStatic(el, state)
	} else if (el.once && !el.onceProcessed) {
		return genOnce(el, state)
	} else if (el.for && !el.forProcessed) {
		return genFor(el, state)
	} else if (el.if && !el.ifProcessed) {
		return genIf(el, state)
	} else if (el.tag === 'template' && !el.slotTarget) {
		return genChildren(el, state) || 'void 0'
	} else if (el.tag === 'slot') {
		return genSlot(el, state)
	} else {
		// component or element
		var code;
		if (el.component) {
			code = genComponent(el.component, el, state);
		} else {
			var data = el.plain ? undefined : genData$2(el, state);

			var children = el.inlineTemplate ? null : genChildren(el, state, true);
			code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")";
		}
		// module transforms
		for (var i = 0; i < state.transforms.length; i++) {
			code = state.transforms[i](el, code);
		}
		return code
	}
}

// hoist static sub-trees out
function genStatic (el, state) {
	el.staticProcessed = true;
	state.staticRenderFns.push(("with(this){return " + (genElement(el, state)) + "}"));
	return ("_m(" + (state.staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")")
}

// v-once
function genOnce (el, state) {
	el.onceProcessed = true;
	if (el.if && !el.ifProcessed) {
		return genIf(el, state)
	} else if (el.staticInFor) {
		var key = '';
		var parent = el.parent;
		while (parent) {
			if (parent.for) {
				key = parent.key;
				break
			}
			parent = parent.parent;
		}
		if (!key) {
			"development" !== 'production' && state.warn(
				"v-once can only be used inside v-for that is keyed. "
			);
			return genElement(el, state)
		}
		return ("_o(" + (genElement(el, state)) + "," + (state.onceId++) + "," + key + ")")
	} else {
		return genStatic(el, state)
	}
}

function genIf (
	el,
	state,
	altGen,
	altEmpty
) {
	el.ifProcessed = true; // avoid recursion
	return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
}

function genIfConditions (
	conditions,
	state,
	altGen,
	altEmpty
) {
	if (!conditions.length) {
		return altEmpty || '_e()'
	}

	var condition = conditions.shift();
	if (condition.exp) {
		return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions, state, altGen, altEmpty)))
	} else {
		return ("" + (genTernaryExp(condition.block)))
	}

	// v-if with v-once should generate code like (a)?_m(0):_m(1)
	function genTernaryExp (el) {
		return altGen
			? altGen(el, state)
			: el.once
				? genOnce(el, state)
				: genElement(el, state)
	}
}

function genFor (
	el,
	state,
	altGen,
	altHelper
) {
	var exp = el.for;
	var alias = el.alias;
	var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
	var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';

	if ("development" !== 'production' &&
		state.maybeComponent(el) &&
		el.tag !== 'slot' &&
		el.tag !== 'template' &&
		!el.key
	) {
		state.warn(
			"<" + (el.tag) + " v-for=\"" + alias + " in " + exp + "\">: component lists rendered with " +
			"v-for should have explicit keys. " +
			"See https://vuejs.org/guide/list.html#key for more info.",
			true /* tip */
		);
	}

	el.forProcessed = true; // avoid recursion
	return (altHelper || '_l') + "((" + exp + ")," +
		"function(" + alias + iterator1 + iterator2 + "){" +
			"return " + ((altGen || genElement)(el, state)) +
		'})'
}

function genData$2 (el, state) {
	var data = '{';

	// directives first.
	// directives may mutate the el's other properties before they are generated.
	var dirs = genDirectives(el, state);
	if (dirs) { data += dirs + ','; }

	// key
	if (el.key) {
		data += "key:" + (el.key) + ",";
	}
	// ref
	if (el.ref) {
		data += "ref:" + (el.ref) + ",";
	}
	if (el.refInFor) {
		data += "refInFor:true,";
	}
	// pre
	if (el.pre) {
		data += "pre:true,";
	}
	// record original tag name for components using "is" attribute
	if (el.component) {
		data += "tag:\"" + (el.tag) + "\",";
	}
	// module data generation functions
	for (var i = 0; i < state.dataGenFns.length; i++) {
		data += state.dataGenFns[i](el);
	}
	// attributes
	if (el.attrs) {
		data += "attrs:{" + (genProps(el.attrs)) + "},";
	}
	// DOM props
	if (el.props) {
		data += "domProps:{" + (genProps(el.props)) + "},";
	}
	// event handlers
	if (el.events) {
		data += (genHandlers(el.events, false, state.warn)) + ",";
	}
	if (el.nativeEvents) {
		data += (genHandlers(el.nativeEvents, true, state.warn)) + ",";
	}
	// slot target
	// only for non-scoped slots
	if (el.slotTarget && !el.slotScope) {
		data += "slot:" + (el.slotTarget) + ",";
	}
	// scoped slots
	if (el.scopedSlots) {
		data += (genScopedSlots(el.scopedSlots, state)) + ",";
	}
	// component v-model
	if (el.model) {
		data += "model:{value:" + (el.model.value) + ",callback:" + (el.model.callback) + ",expression:" + (el.model.expression) + "},";
	}
	// inline-template
	if (el.inlineTemplate) {
		var inlineTemplate = genInlineTemplate(el, state);
		if (inlineTemplate) {
			data += inlineTemplate + ",";
		}
	}
	data = data.replace(/,$/, '') + '}';
	// v-bind data wrap
	if (el.wrapData) {
		data = el.wrapData(data);
	}
	// v-on data wrap
	if (el.wrapListeners) {
		data = el.wrapListeners(data);
	}
	return data
}

function genDirectives (el, state) {
	var dirs = el.directives;
	if (!dirs) { return }
	var res = 'directives:[';
	var hasRuntime = false;
	var i, l, dir, needRuntime;
	for (i = 0, l = dirs.length; i < l; i++) {
		dir = dirs[i];
		needRuntime = true;
		var gen = state.directives[dir.name];
		if (gen) {
			// compile-time directive that manipulates AST.
			// returns true if it also needs a runtime counterpart.
			needRuntime = !!gen(el, dir, state.warn);
		}
		if (needRuntime) {
			hasRuntime = true;
			res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:\"" + (dir.arg) + "\"") : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
		}
	}
	if (hasRuntime) {
		return res.slice(0, -1) + ']'
	}
}

function genInlineTemplate (el, state) {
	var ast = el.children[0];
	if ("development" !== 'production' && (
		el.children.length !== 1 || ast.type !== 1
	)) {
		state.warn('Inline-template components must have exactly one child element.');
	}
	if (ast.type === 1) {
		var inlineRenderFns = generate(ast, state.options);
		return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}")
	}
}

function genScopedSlots (
	slots,
	state
) {
	return ("scopedSlots:_u([" + (Object.keys(slots).map(function (key) {
			return genScopedSlot(key, slots[key], state)
		}).join(',')) + "])")
}

function genScopedSlot (
	key,
	el,
	state
) {
	if (el.for && !el.forProcessed) {
		return genForScopedSlot(key, el, state)
	}
	var fn = "function(" + (String(el.slotScope)) + "){" +
		"return " + (el.tag === 'template'
			? el.if
				? ((el.if) + "?" + (genChildren(el, state) || 'undefined') + ":undefined")
				: genChildren(el, state) || 'undefined'
			: genElement(el, state)) + "}";
	return ("{key:" + key + ",fn:" + fn + "}")
}

function genForScopedSlot (
	key,
	el,
	state
) {
	var exp = el.for;
	var alias = el.alias;
	var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
	var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
	el.forProcessed = true; // avoid recursion
	return "_l((" + exp + ")," +
		"function(" + alias + iterator1 + iterator2 + "){" +
			"return " + (genScopedSlot(key, el, state)) +
		'})'
}

function genChildren (
	el,
	state,
	checkSkip,
	altGenElement,
	altGenNode
) {
	var children = el.children;
	if (children.length) {
		var el$1 = children[0];
		// optimize single v-for
		if (children.length === 1 &&
			el$1.for &&
			el$1.tag !== 'template' &&
			el$1.tag !== 'slot'
		) {
			return (altGenElement || genElement)(el$1, state)
		}
		var normalizationType = checkSkip
			? getNormalizationType(children, state.maybeComponent)
			: 0;
		var gen = altGenNode || genNode;
		return ("[" + (children.map(function (c) { return gen(c, state); }).join(',')) + "]" + (normalizationType ? ("," + normalizationType) : ''))
	}
}

// determine the normalization needed for the children array.
// 0: no normalization needed
// 1: simple normalization needed (possible 1-level deep nested array)
// 2: full normalization needed
function getNormalizationType (
	children,
	maybeComponent
) {
	var res = 0;
	for (var i = 0; i < children.length; i++) {
		var el = children[i];
		if (el.type !== 1) {
			continue
		}
		if (needsNormalization(el) ||
				(el.ifConditions && el.ifConditions.some(function (c) { return needsNormalization(c.block); }))) {
			res = 2;
			break
		}
		if (maybeComponent(el) ||
				(el.ifConditions && el.ifConditions.some(function (c) { return maybeComponent(c.block); }))) {
			res = 1;
		}
	}
	return res
}

function needsNormalization (el) {
	return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
}

function genNode (node, state) {
	if (node.type === 1) {
		return genElement(node, state)
	} if (node.type === 3 && node.isComment) {
		return genComment(node)
	} else {
		return genText(node)
	}
}

function genText (text) {
	return ("_v(" + (text.type === 2
		? text.expression // no need for () because already wrapped in _s()
		: transformSpecialNewlines(JSON.stringify(text.text))) + ")")
}

function genComment (comment) {
	return ("_e(" + (JSON.stringify(comment.text)) + ")")
}

function genSlot (el, state) {
	var slotName = el.slotName || '"default"';
	var children = genChildren(el, state);
	var res = "_t(" + slotName + (children ? ("," + children) : '');
	var attrs = el.attrs && ("{" + (el.attrs.map(function (a) { return ((camelize(a.name)) + ":" + (a.value)); }).join(',')) + "}");
	var bind$$1 = el.attrsMap['v-bind'];
	if ((attrs || bind$$1) && !children) {
		res += ",null";
	}
	if (attrs) {
		res += "," + attrs;
	}
	if (bind$$1) {
		res += (attrs ? '' : ',null') + "," + bind$$1;
	}
	return res + ')'
}

// componentName is el.component, take it as argument to shun flow's pessimistic refinement
function genComponent (
	componentName,
	el,
	state
) {
	var children = el.inlineTemplate ? null : genChildren(el, state, true);
	return ("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")")
}

function genProps (props) {
	var res = '';
	for (var i = 0; i < props.length; i++) {
		var prop = props[i];
		/* istanbul ignore if */
		{
			res += "\"" + (prop.name) + "\":" + (transformSpecialNewlines(prop.value)) + ",";
		}
	}
	return res.slice(0, -1)
}

// #3895, #4268
function transformSpecialNewlines (text) {
	return text
		.replace(/\u2028/g, '\\u2028')
		.replace(/\u2029/g, '\\u2029')
}

/*  */

// these keywords should not appear inside expressions, but operators like
// typeof, instanceof and in are allowed
var prohibitedKeywordRE = new RegExp('\\b' + (
	'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
	'super,throw,while,yield,delete,export,import,return,switch,default,' +
	'extends,finally,continue,debugger,function,arguments'
).split(',').join('\\b|\\b') + '\\b');

// these unary operators should not be used as property/method names
var unaryOperatorsRE = new RegExp('\\b' + (
	'delete,typeof,void'
).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');

// strip strings in expressions
var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;

// detect problematic expressions in a template
function detectErrors (ast) {
	var errors = [];
	if (ast) {
		checkNode(ast, errors);
	}
	return errors
}

function checkNode (node, errors) {
	if (node.type === 1) {
		for (var name in node.attrsMap) {
			if (dirRE.test(name)) {
				var value = node.attrsMap[name];
				if (value) {
					if (name === 'v-for') {
						checkFor(node, ("v-for=\"" + value + "\""), errors);
					} else if (onRE.test(name)) {
						checkEvent(value, (name + "=\"" + value + "\""), errors);
					} else {
						checkExpression(value, (name + "=\"" + value + "\""), errors);
					}
				}
			}
		}
		if (node.children) {
			for (var i = 0; i < node.children.length; i++) {
				checkNode(node.children[i], errors);
			}
		}
	} else if (node.type === 2) {
		checkExpression(node.expression, node.text, errors);
	}
}

function checkEvent (exp, text, errors) {
	var stipped = exp.replace(stripStringRE, '');
	var keywordMatch = stipped.match(unaryOperatorsRE);
	if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== '$') {
		errors.push(
			"avoid using JavaScript unary operator as property name: " +
			"\"" + (keywordMatch[0]) + "\" in expression " + (text.trim())
		);
	}
	checkExpression(exp, text, errors);
}

function checkFor (node, text, errors) {
	checkExpression(node.for || '', text, errors);
	checkIdentifier(node.alias, 'v-for alias', text, errors);
	checkIdentifier(node.iterator1, 'v-for iterator', text, errors);
	checkIdentifier(node.iterator2, 'v-for iterator', text, errors);
}

function checkIdentifier (
	ident,
	type,
	text,
	errors
) {
	if (typeof ident === 'string') {
		try {
			new Function(("var " + ident + "=_"));
		} catch (e) {
			errors.push(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())));
		}
	}
}

function checkExpression (exp, text, errors) {
	try {
		new Function(("return " + exp));
	} catch (e) {
		var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
		if (keywordMatch) {
			errors.push(
				"avoid using JavaScript keyword as property name: " +
				"\"" + (keywordMatch[0]) + "\"\n  Raw expression: " + (text.trim())
			);
		} else {
			errors.push(
				"invalid expression: " + (e.message) + " in\n\n" +
				"    " + exp + "\n\n" +
				"  Raw expression: " + (text.trim()) + "\n"
			);
		}
	}
}

/*  */

function createFunction (code, errors) {
	try {
		return new Function(code)
	} catch (err) {
		errors.push({ err: err, code: code });
		return noop
	}
}

function createCompileToFunctionFn (compile) {
	var cache = Object.create(null);

	return function compileToFunctions (
		template,
		options,
		vm
	) {
		options = extend({}, options);
		var warn$$1 = options.warn || warn;
		delete options.warn;

		/* istanbul ignore if */
		{
			// detect possible CSP restriction
			try {
				new Function('return 1');
			} catch (e) {
				if (e.toString().match(/unsafe-eval|CSP/)) {
					warn$$1(
						'It seems you are using the standalone build of Vue.js in an ' +
						'environment with Content Security Policy that prohibits unsafe-eval. ' +
						'The template compiler cannot work in this environment. Consider ' +
						'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
						'templates into render functions.'
					);
				}
			}
		}

		// check cache
		var key = options.delimiters
			? String(options.delimiters) + template
			: template;
		if (cache[key]) {
			return cache[key]
		}

		// compile
		var compiled = compile(template, options);

		// check compilation errors/tips
		{
			if (compiled.errors && compiled.errors.length) {
				warn$$1(
					"Error compiling template:\n\n" + template + "\n\n" +
					compiled.errors.map(function (e) { return ("- " + e); }).join('\n') + '\n',
					vm
				);
			}
			if (compiled.tips && compiled.tips.length) {
				compiled.tips.forEach(function (msg) { return tip(msg, vm); });
			}
		}

		// turn code into functions
		var res = {};
		var fnGenErrors = [];
		res.render = createFunction(compiled.render, fnGenErrors);
		res.staticRenderFns = compiled.staticRenderFns.map(function (code) {
			return createFunction(code, fnGenErrors)
		});

		// check function generation errors.
		// this should only happen if there is a bug in the compiler itself.
		// mostly for codegen development use
		/* istanbul ignore if */
		{
			if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
				warn$$1(
					"Failed to generate render function:\n\n" +
					fnGenErrors.map(function (ref) {
						var err = ref.err;
						var code = ref.code;

						return ((err.toString()) + " in\n\n" + code + "\n");
				}).join('\n'),
					vm
				);
			}
		}

		return (cache[key] = res)
	}
}

/*  */

function createCompilerCreator (baseCompile) {
	return function createCompiler (baseOptions) {
		function compile (
			template,
			options
		) {
			var finalOptions = Object.create(baseOptions);
			var errors = [];
			var tips = [];
			finalOptions.warn = function (msg, tip) {
				(tip ? tips : errors).push(msg);
			};

			if (options) {
				// merge custom modules
				if (options.modules) {
					finalOptions.modules =
						(baseOptions.modules || []).concat(options.modules);
				}
				// merge custom directives
				if (options.directives) {
					finalOptions.directives = extend(
						Object.create(baseOptions.directives || null),
						options.directives
					);
				}
				// copy other options
				for (var key in options) {
					if (key !== 'modules' && key !== 'directives') {
						finalOptions[key] = options[key];
					}
				}
			}

			var compiled = baseCompile(template, finalOptions);
			{
				errors.push.apply(errors, detectErrors(compiled.ast));
			}
			compiled.errors = errors;
			compiled.tips = tips;
			return compiled
		}

		return {
			compile: compile,
			compileToFunctions: createCompileToFunctionFn(compile)
		}
	}
}

/*  */

// `createCompilerCreator` allows creating compilers that use alternative
// parser/optimizer/codegen, e.g the SSR optimizing compiler.
// Here we just export a default compiler using the default parts.
var createCompiler = createCompilerCreator(function baseCompile (
	template,
	options
) {
	var ast = parse(template.trim(), options);
	if (options.optimize !== false) {
		optimize(ast, options);
	}
	var code = generate(ast, options);
	return {
		ast: ast,
		render: code.render,
		staticRenderFns: code.staticRenderFns
	}
});

/*  */

var ref$1 = createCompiler(baseOptions);
var compileToFunctions = ref$1.compileToFunctions;

/*  */

// check whether current browser encodes a char inside attribute values
var div;
function getShouldDecode (href) {
	div = div || document.createElement('div');
	div.innerHTML = href ? "<a href=\"\n\"/>" : "<div a=\"\n\"/>";
	return div.innerHTML.indexOf('&#10;') > 0
}

// #3663: IE encodes newlines inside attribute values while other browsers don't
var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
// #6828: chrome encodes content in a[href]
var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;

/*  */

var idToTemplate = cached(function (id) {
	var el = query(id);
	return el && el.innerHTML
});

var mount = Vue.prototype.$mount;
Vue.prototype.$mount = function (
	el,
	hydrating
) {
	el = el && query(el);

	/* istanbul ignore if */
	if (el === document.body || el === document.documentElement) {
		"development" !== 'production' && warn(
			"Do not mount Vue to <html> or <body> - mount to normal elements instead."
		);
		return this
	}

	var options = this.$options;
	// resolve template/el and convert to render function
	if (!options.render) {
		var template = options.template;
		if (template) {
			if (typeof template === 'string') {
				if (template.charAt(0) === '#') {
					template = idToTemplate(template);
					/* istanbul ignore if */
					if ("development" !== 'production' && !template) {
						warn(
							("Template element not found or is empty: " + (options.template)),
							this
						);
					}
				}
			} else if (template.nodeType) {
				template = template.innerHTML;
			} else {
				{
					warn('invalid template option:' + template, this);
				}
				return this
			}
		} else if (el) {
			template = getOuterHTML(el);
		}
		if (template) {
			/* istanbul ignore if */
			if ("development" !== 'production' && config.performance && mark) {
				mark('compile');
			}

			var ref = compileToFunctions(template, {
				shouldDecodeNewlines: shouldDecodeNewlines,
				shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
				delimiters: options.delimiters,
				comments: options.comments
			}, this);
			var render = ref.render;
			var staticRenderFns = ref.staticRenderFns;
			options.render = render;
			options.staticRenderFns = staticRenderFns;

			/* istanbul ignore if */
			if ("development" !== 'production' && config.performance && mark) {
				mark('compile end');
				measure(("vue " + (this._name) + " compile"), 'compile', 'compile end');
			}
		}
	}
	return mount.call(this, el, hydrating)
};

/**
 * Get outerHTML of elements, taking care
 * of SVG elements in IE as well.
 */
function getOuterHTML (el) {
	if (el.outerHTML) {
		return el.outerHTML
	} else {
		var container = document.createElement('div');
		container.appendChild(el.cloneNode(true));
		return container.innerHTML
	}
}

Vue.compile = compileToFunctions;

return Vue;

})));